International Engagement

A central pillar of the world order the US established in the period after World War II was the principle of collective security which says that nations will contribute to collective military operations and/or using economic sanctions in response to international aggression. This principle was also the basis for the US establishing military alliances and mutual defense treaties with other countries or groups of countries. This principle has become more controversial recently as some have questioned whether the US should sustain such commitments.

As NATO celebrated its 70th anniversary, there was a debate about the role of NATO in international security. The fact that NATO members have historically not met the agreed-upon requirement of spending 2% of GDP for defense has prompted calls by former President Trump and some Members of Congress for the US to threaten to pull out of NATO if members do not increase their defense spending. However, since Russia’s invasion of Ukraine in 2022, most NATO members have been meeting the 2% spending requirement. 

Also subject to debate are US treaties with Asian countries. Since 1953 the US has had a mutual defense treaty with South Korea and has 24,000 US troops based in South Korea in support of its commitment. Since 1960, the US has had a treaty with Japan that says that the two countries pledge to join forces and act together if there is an armed attack against Japan or against the 39,000 US forces based there.

UPHOLDING THE PRINCIPLE OF COLLECTIVE SECURITY

 

A large bipartisan majority of 80% said it should, including 79% of Republicans and 85% of Democrats.

More Details

Briefing
Respondents were first introduced to the idea of collective security with this short introduction:

All nations face the risk of being attacked or invaded by another nation. The key trigger for World War II was that Germany and Japan invaded neighboring countries. 

After the war, the major countries in the world agreed in the United Nations Charter that the use of military force against another country is a violation of international law, unless it is in self-defense, collective defense, or is approved by the UN Security Council. 

But, because there is no international police force to enforce the law, they also agreed that when a country comes under attack, other countries should join together to defend the country being attacked, not only through military force, but also through economic sanctions. 

This is the principle of “collective security.” The idea is that leaders who might have the desire to conquer neighboring countries, will be deterred or dissuaded if they believe that other countries will join together to come to the defense of the country.

Some countries have collective defense agreements in which they promise to come to each other’s aid if attacked. We’ll look at those types of alliance arrangements shortly. 

The UN Charter provides for a looser form of collective security that doesn’t necessarily require participation from members. The UN Security Council agrees on taking action and invites member states to contribute to some type of international response. Collective security was one of the central principles behind the Gulf War in 1991. When Iraq under Saddam Hussein invaded Kuwait, numerous countries joined together, under U.S. leadership, and drove Iraq out of Kuwait. 

Arguments
Respondents evaluated arguments for and against, “the idea that collective security should be a high priority.”

The arguments in favor did substantially better than those against, overall and among both parties. The pro arguments were found convincing by large bipartisan majorities of around eight-in-ten. The con arguments did do nearly as well, but were still found convincing by small and bipartisan majorities of around six-in-ten.

Final Recommendation
Finally, they were asked whether it should, “be a high priority in U.S. foreign policy to uphold the principle of collective security, by contributing to collective military operations and/or using economic sanctions in response to international aggression?” A large bipartisan majority of 80% said it should, including 79% of Republicans and 85% of Democrats.

Demographics

Results from Past PPC Survey
A 2019 PPC survey asked respondents the same question, and found a large bipartisan majority of 82% said the US should give a high priority to upholding the principle of collective security should, including 77% of Republicans and 89% of Democrats.

 Related Standard Polls
A bipartisan majority has favored the use of US troops if an ally is attacked:

  • Asked whether they would favor the “use of US troops” if a “US ally is invaded,” 85% were in favor, including 91% of Republicans and 85% of Democrats. (2018, Chicago Council on Global Affairs)
  • Asked whether they would favor the “use of US troops,” if “another country seizes territory belonging to a US ally,” 73% were in favor, including 77% of Republicans and 74% of Democrats. (2018, Chicago Council on Global Affairs)

Very large bipartisan majorities have stated for several decades that defending our allies should be an important US foreign policy goal:

  • Between 1974 and 2015, asked whether “defending our allies’ security,” should be a very, somewhat or not an important US foreign policy goal, 83 - 94% have said it should be very (33 - 57%) or somewhat (35 - 55%) important. In 2015, 93% (Republicans 93%, Democrats 95%) said it should be very (38%, Republicans 43%, Democrats 38%) or somewhat (55%, Republicans 49%, Democrats 57%) important. (2015, Chicago Council on Global Affairs)

Finally, they were asked whether it should, “be a high priority in U.S. foreign policy to uphold the principle of collective security, by contributing to collective military operations and/or using economic sanctions in response to international aggression?” A large bipartisan majority of over eight in ten said it should, including 77% of Republicans and 89% of Democrats.
Related Standard Polls
A bipartisan majority has favored the use of US troops if an ally is attacked:

  • Asked whether they would favor the “use of US troops” if a “US ally is invaded,” 85% were in favor, including 91% of Republicans and 85% of Democrats. (2018, Chicago Council on Global Affairs)
  • Asked whether they would favor the “use of US troops,” if “another country seizes territory belonging to a US ally,” 73% were in favor, including 77% of Republicans and 74% of Democrats. (2018, Chicago Council on Global Affairs)

Very large bipartisan majorities have stated for several decades that defending our allies should be an important US foreign policy goal:

  • Between 1974 and 2015, asked whether “defending our allies’ security,” should be a very, somewhat or not an important US foreign policy goal, 83 - 94% have said it should be very (33 - 57%) or somewhat (35 - 55%) important. In 2015, 93% (Republicans 93%, Democrats 95%) said it should be very (38%, Republicans 43%, Democrats 38%) or somewhat (55%, Republicans 49%, Democrats 57%) important. (2015, Chicago Council on Global Affairs)

MUTUAL DEFENSE TREATIES

Survey: PPC, August 2024 

Asked whether “the U.S. should or should not continue to be part of the NATO military alliance,” a large bipartisan majority of 78% said it should, including 70% of Republicans, 87% of Democrats and 75% of independents.

More Details

Briefing
Respondents were first provided a briefing on the NATO mutual defense treaty which covered its history and membership:

Closely related to the idea of collective security is the idea of mutual defense treaties or alliances. When nations enter into an alliance, they promise that if any one of them is attacked, all of the other members of the alliance will band together and defend that nation. 

While collective security is a general principle, a mutual defense treaty is a firm commitment to help defend another country or group of countries in the event that they come under attack. An attack on one is considered an attack on all. We will now evaluate some of America’s alliances. 

Some people believe that these alliances continue to serve U.S. interests and values, while others think that they have grown obsolete. America’s most significant alliance is the North Atlantic Treaty Organization or NATO. This includes 30 European nations, and Canada as well as the U.S. It was formed after World War II with 15 members in response to the concern that Europe might be attacked by the Soviet Union. 

Later, additional countries were added that were in Eastern Europe and had originally been part of an alliance with the Soviet Union, including Poland, Hungary, the Czech Republic and others. Sweden and Finland joined in the last year in response to Russia’s actions in Ukraine. 

They were then informed about Article 5 of the NATO charter, which requires members to come to the defense of other members if they are attacked:

The NATO charter includes a key section, called Article 5, which says that NATO members regard an attack on any member as an attack on all and that all members will defend any member that is attacked. While a key focus is the potential for an attack by Russia, NATO has addressed other issues as well. After the September 11th attacks on the US, NATO invoked Article 5 and several member countries joined the US in its operation in Afghanistan.

Lastly, they were informed about the total military force of the European members of NATO:

The military forces of the NATO countries are closely linked, have joint command structures, and do military exercises together to ensure that they will be able to work together effectively if it is necessary to defend any of the members. The U.S. keeps about 100,000 troops stationed in Europe to help defend Europe if necessary and to send a signal of its commitment to help defend Europe. The European members have around 1.7 million troops stationed in Europe. 

Arguments
The arguments in favor of remaining in NATO did substantially better than those against, overall and among both Republicans and Democrats. The pro arguments were found convincing by large bipartisan majorities of around eight-in-ten, including 74-78% of Republicans and 86-87% of Democrats. The con arguments were found convincing by just 53-55%, including around six-in-ten Republicans and only about half of Democrats.

Final Recommendation
Finally, respondents were asked whether “they think the U.S. should or should not continue to be part of the NATO military alliance?” A large bipartisan majority of 78% said it should, including 70% of Republicans, 87% of Democrats and 75% of independents.

Demographics

Results from Past PPC Survey
A 2019 PPC survey asked the same question found a very large bipartisan majority of 83% in support of the US maintaining its membership in NATO, including 77% of Republicans, 90% of Democrats and 78% of independents. Thus, over the five-year period from 2019 to 2024, overall support for the US remaining in NATO has remained about the same, dropping only slightly by five points.

Related Standard Polls
With no background information, majorities – bipartisan in most cases – have favored the US maintaining its commitment to NATO:

  • Respondents were asked whether, “the U.S. should increase its commitment to NATO, keep its commitment what it is now, decrease its commitment but still remain in NATO, or withdraw from NATO entirely.”
    • A bipartisan majority of 67% want the US’ commitment to stay the same (47%) or increase (20%), including 80% of Democrats, 53% of Republicans and 67% of Independents.
    • Just 16% want to decrease its commitment
    • Only 12% support withdrawal, including just 16% of Republicans and 5% of Democrats.(Gallup, February 2024)
  • Asked the same question in a different survey, a bipartisan majority of 78% support maintaining or increasing the US’ commitment to NATO, including 68% of Republicans and 92% of Democrats. Since 1990, support for maintaining or increasing has steadily increased, overall and among Democrats and independents, while Republicans have remained about the same. (CCGA, June 2024 and 1990)
  • Told that, “Some people say that NATO is still essential to our country’s security. Others say it’s no longer essential,” and asked to choose which view is closer to their own, a bipartisan majority of 67% said it is still essential to US security, including 61% of Republicans and 83% of Democrats. Support is practically unchanged since the question was first asked over twenty years ago in 2002, but more Democrats are in support (National 64%, Republicans 64%, Democrats 68%). (CCGA, June 2024 and 2002)
  • Told that NATO is “the military alliance among western nations” and asked whether they “think the NATO alliance should be maintained, or is this alliance not necessary anymore,” 77% favored maintaining it, including 70% of Republicans and 88% of Democrats. (March 2019, Gallup)
  • Asked whether the US “should increase our commitment to NATO, keep our commitment what it is now, decrease our commitment to NATO, or withdraw from NATO entirely,” 75% (Republicans 65%, Democrats 87%) favored keeping the commitment the same (57%, Republicans 59%, Democrats 57%) or increasing the commitment (18%, Republicans 6%, Democrats 30%), while 16% wanted to decrease it (Republicans 28%, Democrats 7%), and 4-6% wanted to withdraw entirely. (2018, Chicago Council on Global Affairs) 
  • A large majority said that NATO is “still essential to our country’s security,” 69% (Republicans 58%, Democrats 83%). (2017, Chicago Council on Global Affairs) 

A bipartisan majority has supported the general principle that the US should use military force to defend allies:

  • Asked whether they would favor the “use of US troops” if a “US ally is invaded,” 85% were in favor, including 91% of Republicans and 85% of Democrats. (2018, Chicago Council on Global Affairs)
  • Asked whether they would favor the “use of US troops,” if “another country seizes territory belonging to a US ally,” 73% were in favor, including 77% of Republicans and 74% of Democrats. (2018, Chicago Council on Global Affairs)

When asked about the possibility of “scaling back U.S. involvement in NATO” only minorities support it. However no definition of scaling back is provided and large numbers do not give an answer. Support is higher among Republicans.

  • “Scaling back U.S. involvement in NATO,” is supported by just 32% and opposed by 43%, with the rest answering “not sure”. Among Republicans, half are in support of scaling back (50%, with 28% opposed). A majority of Democrats are opposed (63%), and independents are divided (33% to 35%). (YouGov, June 2024)
  • Asked the same question several months earlier, just 32% were in support of scaling back US involvement in NATO and 42% were opposed. Among Republicans, nearly half (47%) were in support and 24% opposed. A majority of Democrats were opposed (62%), and independents were divided (34% to 38%). (YouGov, January 2024)

When the military commitments of NATO membership have been specified, a bipartisan majority has favored the US making such a commitment, but the majority is smaller, and a large share has not provided an answer.  But few oppose the commitment. 

  • Respondents were informed that, “As a member of the NATO alliance, an attack on one of the NATO members is considered to be an attack on the US and the US is obligated to come to the defense of the NATO member that has been attacked.” Then, asked whether, “ the US should maintain its commitment to defend NATO allies when attacked or is this no longer necessary,” 57% favored the US maintaining its commitment (Democrats 71%, Republicans 53%). An exceptionally large 32% did not provide an answer (Democrats 25%, Republicans 28%). Just 11% said the commitment is no longer necessary (Democrats 4%, Republicans 19%). (March 2019, YouGov)

With no background information, and offered a non-committal option, support for maintaining US membership in NATO has dropped to a plurality, with a large share taking a non-committal position:

  • Asked whether they support “the US’ membership of NATO,” a plurality were in support (44%, Republicans 41%, Democrats 60%, ) and a small number opposed (10%,  Republicans 18%, Democrats 3%).  A substantial number chose “neither support nor oppose”(Republicans 20%, Democrats 14%) , and an even larger number (29%) did not provide an answer. (March 2019, YouGov)

Respondents were presented the following briefing material as part of an in-person deliberative poll by Stanford University’s Center for Deliberative Democracy in September 2019:

During and after the Cold War, the US led its partners through alliances and free trade agreements that focused on strategic areas of the globe. The North Atlantic Treaty Organization (NATO), an alliance of the US, Canada, and over twenty European countries, requires members to defend any member attacked by an outside power. Originally, it was part of the US strategy for protecting Western Europe from invasion by the Soviet Union.

After the Cold War, NATO expanded to several former Soviet satellites bordering Russia thus antagonizing that country. At the same time, many Western European members significantly reduced their defense spending. In 2014, NATO members all committed to spend 2% of their gross domestic product on defense by 2024, a goal first set in 2002. 

They were then presented a proposal, and arguments for and against it:

Proposal: The US should reaffirm its commitment to defend any NATO ally attacked by a hostile force.

Argument in Favor: President Trump has repeatedly called this commitment in question, demoralizing our allies and increasing the chances of Russian military intervention. Our European allies have never in fact called upon the US to repel attacks. Only the US has used NATO this way, in response to 9/11. NATO members honored our call for war against Afghanistan.

Argument Against: The NATO commitment increases the chances of war with Russia. President Trump should require large increases in European defense spending before reaffirming our commitment.

After reading the briefing material, respondents deliberated with each other in-person before making their final recommendation. On a 0-10 scale, with 5 being “in the middle”, a large bipartisan majority of 83% favored the US reaffirming its commitment to NATO (6-10), including 77% of Republicans and 90% of Democrats.
Pre-Deliberation Poll
Before receiving any briefing materials or engaging in the deliberation process respondents were given the same poll question as those asked afterwards. Support increased from the pre-deliberation poll to the post-deliberation poll, overall (72% to 83%), and among Republicans (59% to 77%) and Democrats (81% to 90%). 

Respondents were introduced to the dispute between the US and European NATO members over defense spending levels:

For some years now there has been a dispute between the U.S. and other members of NATO about their level of defense spending. The U.S. has complained that it spends about 4-5% of the U.S. economy on its military, while European nations generally spend about 2% or less, some as low as 1%. Europeans point out that the amount that the U.S. spends is not only in Europe but also in Asia and in the U.S. homeland, and that Europe already spends twice as much as Russia, which is NATO’s primary focus.

Nonetheless, in 2014, the European NATO partners agreed to set a goal to increase their defense spending to at least 2% of their budget. There have been some increases, but only 4 of the 26 European countries have met this goal, though several more are expected to reach this level within the year. One of the largest countries, Germany, is unlikely to reach it at any point in the near future.

They were then told that there is some debate about what the U.S. should do about this situation and were asked to evaluate three options with an argument in favor of each one. Three possible approaches were presented.

They were presented the first proposal and an argument in favor:

Press European countries to spend more on their military and say that if they do not the U.S. will disengage from Europe militarily and possibly withdraw from NATO

The argument did only moderately well with an overall majority of 56% finding it convincing. However, there was a sharp partisan divide: 76% of Republicans, but only 39% of Democrats found it convincing. 

They were presented the second proposal and an argument in favor:

Press European countries to spend more on their military, but NOT threaten to disengage from Europe or withdraw from NATO.

The argument did far better than the first argument. Overall 80% found it convincing as did 87% of Democrats. Among Republicans, 72% found it convincing— roughly the same as the 76% who found the argument for the first proposal convincing— suggesting substantial ambivalence. 
They were presented the third proposal and an argument in favor:

Remain part of NATO but reduce U.S. military investments in Europe to bring them more in line with the level that the Europeans make. 

The argument also did quite well with 74% finding it convincing. Among Republicans (77%) it did the best of all arguments, with 72% of Democrats concurring.
Asked for their final recommendation, the least attractive option was to threaten withdrawal from Europe and NATO, which was endorsed by just 12% overall—one in five Republicans and a miniscule 4% of Democrats.  The clear favorite, endorsed by about half overall and by both parties, was the third option: remaining part of NATO but reducing US military spending in line with European defense spending. The option of pressing the Europeans but not threatening withdrawal was endorsed by 35% overall— Republicans 29%, Democrats 41%.
Related Standard Polls
As a way to increase NATO members’ defense spending, and offered two options, a majority has favored the US using diplomacy rather than threatening to withdraw, though Republicans diverge.  

  • Respondents were told that, “As you may know, the United States has long urged its NATO allies to spend more on defense. They have recently agreed to increase defense spending but have not yet done so.” They were then asked to choose between two options.  The option that was the most popular overall and with Democrats was:
  • “The United States should encourage greater allied defense spending through persuasion and diplomatic means while maintaining a firm commitment to defend NATO members,” (58%,  Democrats 72%, Republicans 45%). 
  • However a slight majority of Republicans favored the second option: “The United States should withhold its commitment to defend NATO members until NATO allies actually spend more on defense,” (38%, Republicans 52%, Democrats 25%). (2017, Chicago Council on Global Affairs)

UKRAINE-RUSSIA WAR

Survey: PPC, August 2024 

Asked whether they favor, “the US continuing to provide military assistance to Ukraine, including military equipment, ammunition, training and intelligence,” 67% were in favor, including 57% of Republicans, 79% of Democrats and 59% of independents.

More Details:

Briefing
Respondents were first provided a briefing on the history of Ukraine-Russia relations, including the Ukrainian civil war and the annexation of Crimea by Russia, as well as the tensions between NATO and Russia.

They were then presented a briefing on US military assistance to Ukraine, as follows:

We will now turn to a key question: whether the US should continue to provide military and other assistance to Ukraine. 

As you may know, the US has been providing the Ukrainian military: military equipment, ammunition, training and intelligence. It is difficult to put a dollar value on this assistance, as much of the military equipment provided is fairly old and used, but it is roughly some tens of billions of dollars. 

European countries have been providing an equivalent amount of military assistance.

Arguments
The first argument in favor, that Russia has violated international law which the US has a duty to uphold, did very well.. It was found convincing by an overwhelming bipartisan majority of 79% (Republicans 74%, Democrats 86%). The first con argument, that US involvement risks escalating the conflict to a nuclear war, was found convincing by 60%, including just 68% of Republicans but just over half of Democrats (54%).

The second argument in favor, that it is important for US security that Russia does not gain a foothold in Europe, was found convincing by a very large bipartisan majority of 80% (Republicans 75%, Democrats 87%). The second con argument countered that Europe is fully capable of handling the problem itself and challenged the idea that failing to respond to the conflict threatens world order, was found convincing by 59%, including 68% of Republicans and independents, but only half of Democrats (51%).

Final Recommendation
Asked whether they favor, “the US continuing to provide military assistance to Ukraine, including military equipment, ammunition, training and intelligence,” 67% were in favor, including 57% of Republicans, 79% of Democrats and 59% of independents.

Demographics

Results in Six Swing States
The survey was also fielded in six swing states: AZ, GA, MI, NV, PA and WI. Across all swing states, large majorities of 64-71% were in favor, including majorities of Democrats (73-85%).

Among Republicans, majorities were in favor in Arizona, Georgia, Pennsylvania and Wisconsin (56-60%), while in Michigan and Nevada they were evenly divided. However, majorities of Republicans in Michigan (57%) and Nevada (61%) find it at least “tolerable” (rating the proposal 5 or higher on a 0-10 scale measuring its acceptability).

Results from Past PPC Survey
A 2023 survey by PPC asked about the same exact proposal, and found 69% in favor, including 55% of Republicans, 87% of Democrats and 58% of independents. Thus, support for continuing to provide military aid to Ukraine did not change much from 2023 to 2024 – overall and among Republicans and independents the changes are within the confidence intervals (i.e. margins of error). However, among Democrats support dropped by eight points (from 87% to 79%).

Results from Standard Polls
Bipartisan majorities of Americans have supported the US giving military aid to Ukraine. Support declined after the first few months of the war, driven primarily by Republicans, but has remained a majority and has recently ticked up.

  • Asked, "Thinking about the conflict between Russia and Ukraine, do you think the United States is doing too much to help Ukraine, not enough or the right amount," 69% said the right amount (23%) or not enough (46%), including 92% of Democrats and 70% of independents, but just 43% of Republicans. (Gallup, March 2025). Asked the same question in December 2024, 61% were in support. 
  • 65% said the US should, “provide weapons to Ukraine” (Democrats 81%, Republicans 56%, independents 57%) (Reuters/Ipsos, June 2023). This is up from when the same question was asked in February 2023, when 58% said the US should provide weapons (Democrats 73%, Republicans 52%) (Reuters/Ipsos, February 2023). Asked the same question in October 2022, 66% said the US should provide weapons (Reuters/Ipsos, October 2022)
  • 75% said the US should, “supply Ukraine with military equipment” (Democrats 88%, Republicans 63%, independents 64%) (UMD Critical Issues, June 2022
  • 72% said the US should, “send weapons and supplies to Ukraine” (Democrats 80%, Republicans 71%, independents 68%) (CBS News/YouGov, April 2022)
  • 83% said the US should, “supply Ukraine with military equipment” (UMD Critical Issues, March 2022)

When offered a non-committal option (e.g. not sure, neither favor nor oppose), around one-fifth choose that option, lowering the total percent in support.

  • A plurality of 48% favored the US, “providing weapons to Ukraine,” including 63% of Democrats but just 39% of Republicans (37% opposed), with 22% choosing neither favor nor oppose. (AP-NORC, January 2023) This is down from May 2022, when 60% were in support with 20% choosing neither, including 72% of Democrats and a majority of Republicans (53%). (AP-NORC, May 2022)
  • 53% said the US should, “continue to give weapons to Ukraine to help it defend itself from the Russian invasion,” with 25% saying no and 22% “not sure”. Among Democrats, 75% said yes. Among Republicans, 50% said yes and 31% said no. (Economist/YouGov, December 2022)
  • 59% said the US should, “provide weapons such as guns and anti-tank weapons to the Ukrainian military,” partisan breakouts were not provided (Ipsos, December 2022). This is up from April 2022, when 54% held that position. (Ipsos, April 2022)

When US support to help Ukraine fight against Russia is framed only in terms of financial assistance, without specifying how the funding would be used, a small majority or plurality are in support, but less than half of Republicans.

  • 54% said the US should, “send financial aid to Ukraine, in addition to sending weapons,” including 72% of Democrats, but just 39% of Republicans. (Reuters/Ipsos, June 2023)
  • In a question in which “not sure” was offered, a clear plurality of 48% said the US should “continue to give money to Ukraine to help it defend itself from the Russian invasion,” with 31% opposed and 22% saying “not sure.”  Republicans were divided with 39% in favor and 42% opposed, while 68% of Democrats were in favor. (Economist/YouGov, December 2022)

One question asked whether Congress should “authorize additional funding to support Ukraine.” However the question does not make it clear whether “additional funding” this would entail an increase over and above the current levels of funding. Based on responses to other questions it appears that is how it was interpreted by a substantial number of respondents. Just 45% were in favor with 55% opposed, with 28% of Republicans in favor and 71% opposed. Among Democrats, 62% were in favor (CNN, August 2023)

Survey: PPC, August 2024 

Respondents were told that:

Both the US and European countries have also been giving Ukraine humanitarian aid, including providing food and shelter, and helping them repair access to water and electricity. So far, the US has given about $39 billion in such assistance.  The Europeans have contributed an equivalent amount and have also accepted more than a million Ukrainian refugees into their countries. Another proposal is for the US to continue giving humanitarian assistance to Ukraine.

Asked whether they favor, “the US to continue giving humanitarian assistance to Ukraine,” a bipartisan majority of 74% were in favor, including 65% of Republicans, 84% of Democrats and 69% of independents.

Demographics

Results in Six Swing States
The survey was also fielded in six swing states: AZ, GA, MI, NV, PA and WI. 

Results from Past PPC Survey
A 2023 survey by PPC asked about the same proposal, and found 80% in favor, including 92% of Democrats, 72% of Republicans and 73% of independents. Thus support for continuing to provide humanitarian aid to Ukraine dropped slightly from 2023 to 2024 – overall by six points, among Republicans by seven points, and among Democrats eight points.

Survey: PPC 2023

Respondents were asked whether they approve of the US-NATO agreement, by which the US would:

  • let other NATO countries provide Ukraine with fighter jets they bought from the US and to
  • provide training to Ukrainians on how to operate those fighter jets

Asked for their final recommendation, 73% approved, including 63% of Republicans, 86% of Democrats and 64% of independents.

Majorities in all types of congressional districts were in favor of the fighter jet agreement, from very red to very blue districts, with no significant variation.

More Details:

Briefing

Respondents were briefed on this topic, as follows:

Now let’s turn to a specific type of military equipment that Ukraine has been asking the US and other NATO members for – fighter jets.

Until recently only a few NATO countries provided a limited number of fighter jets to Ukraine, and Ukraine has asked for more. NATO countries did have more fighter jets they had bought from the US, but the US did not permit them to transfer them to Ukraine (A condition of the sale was that the US can say who they may transfer the jets to.) 

Recently, at the urging of other NATO members, the US shifted its positions and agreed to allow them to provide those fighter jets to Ukraine. The US also agreed to provide training to Ukrainian pilots on how to operate these fighter jets. Whether the US should have agreed to this has been debated.

Arguments

The first argument in support stated that this type of advanced military equipment is essential for Ukraine to push back Russian forces, and was found convincing by 75% (Republicans 67%, Democrats 86%). The argument against, that this sends an escalatory signal to Russia who could respond with a nuclear attack, was found convincing by 58%, including 66% of Republicans, but just 47% of Democrats.
The second argument in support, that the US and NATO have been sending more advanced weaponry to Ukraine without any escalation by Russia, was found convincing by 73% (Republicans 65%, Democrats 85%). The argument against asserted that, according to the Department of Defense, fighter jets aren’t useful or necessary for Ukraine’s military success, and was found convincing by just 50%, including a small majority of Republicans (55%), but just 42% of Democrats.

Final Recommendation

They were again presented the US-NATO agreement by which the US would:

  • let other NATO countries provide Ukraine with fighter jets they bought from the US and to
  • provide training to Ukrainians on how to operate those fighter jets

Asked for their final recommendation, 73% approved, including 63% of Republicans, 86% of Democrats and 64% of independents.

Majorities in all types of congressional districts were in favor of the fighter jet agreement, from very red to very blue districts, with no significant variation.

Demographics

ALLIANCES WITH SOUTH KOREA AND JAPAN

As you may know, the United States has had a mutual defense treaty with South Korea since 1953. The U.S. keeps 24,000 troops in South Korea. These troops are to help defend South Korea if necessary and to send a signal of America’s commitment to help defend them.  The U.S. regularly does military exercises with South Korean forces to ensure that they will be able to work together effectively if it is necessary to defend them.  These troops are also used for other purposes in Asia. South Korea covers 40 percent of the costs of basing U.S. troops there. Currently, there is some debate about whether the U.S. should continue to have a mutual defense treaty with South Korea.


Demographics

Related Standard Polls
Bipartisan majorities have favored using US troops to defend South Korea:

  • Asked whether, “the US should use troops if: North Korea invades South Korea,” 51% were in support, including 52% of Republicans and 54% of Democrats. (Chicago Council on Global Affairs, 2024)
  • Asked whether the US should, “use military troops to help defend South Korea,” if they “were attacked by North Korea,” 68% said they should, including 74% of Republicans and 62% of Democrats. (April 2017, CNN/ORC)
  • Told that, “There has been some discussion about the circumstances that might justify using US troops in other parts of the world,” and asked whether they favor “the use of US troops...if North Korea invaded South Korea,” 62% were in favor, including 70% of Republicans and 59% of Democrats. (2017, Chicago Council on Global Affairs)

Demographics


Related Standard Polls
Majorities have favored the US having military bases in South Korea:

  • Asked whether the US should have “long-term military bases” in South Korea, 63% felt it should, including 67% of Republicans and 61% of Democrats. (Chicago Council on Global Affairs, 2024)
  • Asked whether the US should have “long-term military bases” in South Korea, 74% felt it should, including 81% of Republicans and 73% of Democrats. (2018, Chicago Council on Global Affairs)

Asked about the number of US troops in South Korea, clear majorities have found the number acceptable. 

  • Told that the “United States currently has about 30,000 troops in South Korea,” 34% thought it was “too many” (Republicans 27%, Democrats 39%), while 62% (Republicans 69%, Democrats 59%) said it was about right (50%) or too few (12%) (June 2010, Global Views)

Majorities would favor partial withdrawal of US troops from South Korea if North Korea agreed to give up its nuclear arsenal, but not complete withdrawal:

  • Asked whether they favor or oppose, “complete withdrawal of US forces from South Korea,” if “the United States and North Korea reach an agreement in which North Korea gives up its nuclear weapons,” 77 - 82% were opposed, and 14 - 18% favored. (2018, Chicago Council on Global Affairs)

Respondents were briefly informed about the mutual security treaty, and US military presence in Japan:

As you may know, the United States has had a mutual security treaty with Japan since 1960.  According to this treaty, the two countries pledge to join forces and act together if there is an armed attack against Japan or against U.S. forces based there.

The U.S. keeps 39,000 troops stationed in Japan. These troops are to help defend Japan, if necessary, and to send a signal of America’s commitment to them.  The U.S. regularly does military exercises with Japanese forces to ensure that they will be able to work together effectively if it is necessary to defend them. These troops are also used for other purposes in Asia. 

Japan covers 75 percent of the cost of basing U.S. troops there. Currently, there is some debate about whether the U.S. should continue to have this mutual security treaty with Japan. 

  • Asked whether they favor, “the use of U.S. troops” if “North Korea attacks Japan,” 64% were in favor, including 71% of Republicans and 62% of Democrats. (2018, Chicago Council on Global Affairs)

Less than half have support the use of US troops to defend Japan if they enter a conflict with China over disputed islands, with opposition decreasing since 2015:

  • Asked whether they support, “the use of US troops if: China initiates a military conflict with Japan,” just 44% are in support, including just 45% of Republicans and 46% of Democrats. (Chicago Council on Global Affairs, 2024)
  • Asked whether they support the “use of U.S. troops” if “China initiates a military conflict with Japan over disputed islands,” 55% opposed, including 50% of Republicans and 57% of Democrats. (2018, Chicago Council on Global Affairs)

The argument in favor did overwhelmingly better. The pro argument was found convincing by around 87%, including 88% of Republicans and 85% of Democrats. The con argument was found convincing by just four in ten, overall and among both parties.

Demographics

Related Standard Polls
A bipartisan majority has favored the US having military bases in Japan, but this has been decreasing since 2014:

  • Asked whether the US should have, “long-term military bases” in Japan, 62% felt they should, including 69% of Republicans and 61% of Democrats. (Chicago Council on Global Affairs, 2024)
  • In 2018, asked whether the US should have, “long-term military bases” in Japan, 65% felt they should, including 73% of Republicans and 64% of Democrats. (2018, Chicago Council on Global Affairs)

Asked about the number of 39,000 US troops in Japan, a majority has found the number acceptable. 

  • Told that the “United States currently has about 33,000 troops in Japan, including Okinawa” 44% thought it was too many (Republicans 38%, Democrats 50%), while 52% (Republicans 60%, Democrats 44%) thought it was about right (47%) or too few (5%). (June 2010, Chicago Council on Global Affairs)

AUTHORIZATION FOR USE OF MILITARY FORCE

Survey: PPC, January 2022

A bipartisan majority of 59% favor repealing the 2001 Authorization for Use of Military Force, which has given Presidents broad authority to initiate military operations against any country, organization or person who was involved with or helped those involved with the September 11th attacks. Support for repealing includes 65% of Democrats, 63% of independents, and a bare majority of Republicans (52%). Majorities of voters in very red (55%) to very blue (66%) congressional districts are in favor.

More Details

Briefing

Respondents were introduced to the context of the proposal as follows:

As you may recall, shortly after the 9/11 attacks Congress passed a resolution that gave the president (who was then George W. Bush) the authority to use military force against:

  • any country, organization or foreign individual that was involved with the 9/11 attacks, or 
  • has helped the organizations involved with the 9/11 attacks. 

What is controversial is that over the last two decades the 2001 AUMF has been repeatedly used as the legal basis for using military force against organizations that were not involved with 9/11, but have similar beliefs and readiness to use terrorist methods. 

Since it was passed, the 2001 AUMF has been used by Presidents Bush, Obama, Trump and Biden as the legal basis for dozens of military operations against various organizations in various countries around the world.  These include extended operations (longer than 60 days) in Syria, Somalia, Yemen, Libya, and Iraq.  

The proposal was then presented:

A proposal has been put forward to repeal the 2001 AUMF.  As discussed above, the President would still have the power to use military force to defend against organizations deemed an imminent threat. But to have an operation that would last longer than 60 days the President would need to get a new AUMF from Congress. 

Arguments

Both pro and con arguments were found convincing by bipartisan majorities. The pro argument proclaimed that the 2001 AUMF has been a “blank check” for warfare and has been used beyond its original intent. Three-quarters found this convincing (GOP 69%, Dem 81%, Ind 73%). The con argument declared that it has been necessary to defend the US against terrorist forces, and was found convincing by 55%, including 61% of Republicans and a bare majority of Democrats (52%). Independents were divided.

Final Recommendation

In the end, respondents were asked whether they favor the following proposal:

Repeal the 2001 Authorization for Use of Military Force (AUMF) which has given the president the authority to use military force against:

  • any country, organization or foreign individual that was involved with the 9/11 attacks, or
  • has helped the organizations involved with the 9/11 attacks

A bipartisan majority of 59% favored repealing the 2001 AUMF, including 65% of Democrats, 63% of independents, and a bare majority of Republicans (52%), Majorities of voters in very red (55%) to very blue (66%) congressional districts were in favor.

Demographics

Related Standard Polls
A standard poll by Data for Progress and YouGov (2019) which gave respondents information about the 2001 AUMF and presented both sides of the debate, found a plurality wanted to change the law, including a majority of Democrats but just a fifth of Republicans. Many respondents said they were not sure:

  • Respondents were told that, “In 2001, Congress passed a law giving the President power to "use all necessary and appropriate force against those nations, organizations, or persons" behind the September 11th attacks. Since then, the law has been used to justify military action in other areas. Supporters of the law say that getting Congressional authorization to fight terrorists is too difficult and the law should stay in place. Opponents say that the original perpetrators of 9/11 have been defeated, and the law has made going to war in new countries too easy.” Then, asked whether, “you think the current law should stay in place, or should the law change,” about half said the law should be changed (49%, Republicans 19%, Democrats 67%). A third said it should stay in place (33%, Republicans 62%, Democrats 15%), and 18% said they are not sure. (Data for Progress/YouGov Aug 2019)

A large bipartisan majority favored President Obama asking for Congressional approval to continue using force against ISIS, authority which was later justified using the 2001 AUMF:

  • Told that, “President Obama has asked Congress for the authority to continue to use military force against ISIS,” respondents were asked whether they, “think he was right to ask Congress for that authority or should he have the option of continuing to use military force against ISIS without authorization from Congress?” Seventy seven percent thought he was right to ask for authority (Republicans 80%, Democrats 74%). (CNN/ORC February 2015)

Status of Legislation
The proposal was in H.R. 255 by Rep. Lee (D), as well as the National Security Powers Act of 2021 by Sen. Murphy (D), which would sunset several AUMFs. Neither bill made it out of committee.

ARMS SALES

Survey: PPC, January 2022

A bipartisan majority of 61% favor the proposal to give Congress more control over arms sales by requiring a simple majority of Congress to approve any arms sale over $14 million, rather than the current system which requires a veto-proof majority (two-thirds) to stop an arms sale proposed by the President. Majorities of Republicans (56%), Democrats (68%) and independents (61%) favor this proposal.

More Details

Briefing

Respondents were introduced to context of the debate about the roles of Congress and the President regarding arms sales, as follows:

Now let’s turn to another issue: the sale of US-made military equipment -- such as planes, missiles, tanks and military computer technologies -- to foreign governments. As you may know, Congress passed a law in 1976 that gave the President the power to approve all such arms sales.

This law states that Congress can disapprove of a sale of military equipment over $14 million dollars. But the President can veto such an action.  Then it would require a two thirds vote in both houses of Congress to override the veto.  In fact, Congress has never succeeded in stopping an arms sale. 

The proposal was then presented:

Currently, there is a proposal that would make it more possible for Congress to stop an arms sale over $14 million. Rather than Congress having the power to vote to stop an arms sale--and possibly be vetoed--arms sales could only occur if a majority in Congress were to vote in favor of the sale.

This would mean that Congress could stop a sale with 51% of votes in both houses of Congress, while currently it could require 2/3s of both houses. 

Arguments

Both pro and con arguments were found convincing by a bipartisan majority. The pro argument voiced the concern that, since arms sales have such a big impact on foreign policy, they should not be left up to one person. Seventy-one percent found this convincing (GOP 66%, Dem 78%, Ind 68%). The con stressed that the President should have more power than Congress over foreign policy and any military-related activities. Fifty-seven percent found this convincing, with little partisan difference (GOP 59%, Dem 57%, Ind 54%).

Final Recommendation

In the end, respondents were asked whether they favor or oppose the following:

Any deal to sell US-made military equipment to a foreign government that is worth over $14 million must be approved by a majority of Congress.

A bipartisan 61% favored the proposal, including 56% of Republicans, 68% of Democrats and 61% of independents. Majorities in very red (57%) to very blue (61%) congressional districts were in favor.

Demographics

Status of Legislation
The proposal was in the National Security Powers Act of 2021 by Sen. Murphy (D) and the National Security Reforms and Accountability Act by Rep. James McGovern (D). Neither bill made it out of committee.

WAR POWERS ACT

Survey: PPC, January 2022

A bipartisan majority of 58% favor a proposal to give Congress more control over military operations initiated by a President, by requiring the President to get the approval of a simple majority of Congress to continue the operation for longer than 60 days, rather than the current system which requires a veto-proof majority (two-thirds).

A majority of Republicans (53%), Democrats (62%) and independents (58%) favor the proposal, as do those in every type of congressional districts, from very red (59%) to very blue (62%).

More Details

Briefing

Respondents were first introduced to context of the debate over the roles of Congress and the President regarding war powers, as follows:

The Constitution gives both Congress and the President a role in the use of military force:

  • Congress is responsible for funding the military and has the power to declare war.
  • The President is the Commander in Chief of the military. 

A less clear area is when the President might use military force outside of the framework of a declaration of war.  

To answer this question, in 1973 Congress passed the War Powers Act. It  states that the President may at times use military force without first getting Congressional approval. But if Congress does not vote in favor of continuing the action within 60 days, the President must stop the military action and withdraw the forces.  

Nonetheless, all Presidents since then have taken the position that, though they may ask Congress for approval, because the President is the Commander in Chief, they do not need Congressional approval to use military force.

They were informed that Presidents Reagan, Clinton and Obama had violated the War Powers Acts, and that:

In each case, Congress had the option of taking an action to cut off funding for the military operation. However, if Congress were to do that, the President could veto such an action. Then it would require two thirds of the votes in both houses of Congress to override that veto. This is politically difficult to achieve.

They were then provided the specific proposal:

Currently, there is a proposal that would make it more possible for Congress to stop a President’s military operation. Rather than Congress having to vote to stop a military operation--and possibly be vetoed--the military operation could only continue after 60 days if a majority in Congress were to vote in favor.

If Congress does not vote to continue the operation within the 60 days, funding will be automatically cut off. That way the President could not veto this cut-off. (This would not apply to military actions in response to a direct attack on the US or its military.)

Arguments

All of the pro and con arguments were found convincing by bipartisan majorities; but the pro arguments were found convincing by about ten percentage points more people than the cons.

The first pro argument exclaimed that our government only functions on checks and balances, and that right now, they are largely absent when it comes to war powers. Seventy-six percent found this convincing (GOP 72%, Dem 81%, Ind 70%). The first con argument rebutted this idea by stating that the Constitution clearly gives the President, as Commander in Chief, full power over military activities. Sixty-four percent found this convincing (GOP 68%, Dem 62%, Ind 59%).

The second pro emphasized that use of the military has too many consequences for our foreign policy to be left in the hands of one person, and was found convincing by 71% (GOP 66%, Dem 77%, Ind 68%). The con countered by proclaiming that having just one person in charge is necessary to take quick, decisive action to protect US security, and was found convincing by 60% (GOP 64%, Dem 57%, Ind 59%).

Final Recommendation

In the end, respondents were asked whether they favor the following:

Make it more possible for Congress to stop a President’s military operation. Rather than Congress having to vote to stop a military operation - and possibly be vetoed - the military operation could only continue after 60 days if a majority in Congress were to vote in favor.

If Congress does not vote to continue the operation within the 60 days, funding will be automatically cut off. That way the President could not veto this cut-off. (This would not apply to military actions in response to a direct attack on the US or its military.)

A bipartisan majority of 58% favored the proposal, including 53% of Republicans, 62% of Democrats and 58% of independents. An analysis of voters by congressional district type, broken out using Cook’s PVI ratings, shows that majorities in all types of districts are in favor, from very red (59%) to very blue (62%).

Demographics

Status of Legislation
The proposal is based on the War Powers Enforcement Act by Rep. Sherman (D) and the National Security Powers Act of 2021 by Sen. Murphy (D). A similar proposal was in the National Security Reforms and Accountability Act by Rep. James McGovern (D), which would cut off funding after 20 days, rather than 60. None of the bills made it out of committee.

THE UNITED NATIONS AND ITS AGENCIES

Survey: PPC, June 2025

A bipartisan majority of 84% said the US should work through the UN and its agencies more or about the same as it has been, including 74% of Republicans and 93% of Democrats. 

A majority nationally (52%) and among Democrats (63%) favor the US working through the UN more.

More Information

Briefing

Respondents were provided background information on the United Nations:

The UN was established after World War II. It is currently made up of 193 Member Nations – nearly all of the nations in the world. 

According to the UN, it provides a forum for its members:

  • to seek to find areas of agreement and solve problems together, 
  • to promote international peace and security, 
  • to work together to provide humanitarian aid and help poorer nations develop their economies.

Member nations also work within the UN to agree on international rules in areas such as international trade, ocean navigation and intellectual property (e.g. patents). 

They were informed of the three main parts  of the UN:

  1. The UN Security Council is the most powerful body within the United Nations. The Security Council’s main mission is to maintain international security.  It is made up of just fifteen members.  Five of them are permanent members and have the power to veto any Security Council decision – this includes the United States, the United Kingdom, France, China and Russia.
  2. The General Assembly includes all UN members with every country getting one vote. It makes recommendations for international actions and approves the UN general budget.
  3. The United Nations also consists of numerous agencies that address international issues

The last part of the briefing on the UN presented information about how the UN is funded, and how much the US tends to contribute:

The UN and its agencies are funded primarily by dues from member nations. The total budget of the UN and its agencies is about $68 billion a year. 

Most nations contribute to the UN and its agencies an amount that is about equal to their share of the world economy. 

For example, if a nation’s economy is 10% of the world economy, then that nation is expected to fund about 10% of the budget of the UN overall and each UN agency.

Many poorer nations contribute less than their share of the world economy. To make up for that, some wealthier nations contribute more than their share.

The US currently contributes $14 billion out of the UN’s total $68 billion in spending, which comes out to a bit less than its share of the world economy.  However, because the US economy is so large, it still contributes more money in total than any other nation.

Arguments

Respondents evaluated three pairs of arguments for and against whether the US should participate in various UN agencies. Each of the arguments were found convincing by bipartisan majorities, but the arguments in favor of the US participating in UN agencies did consistently better -- nationally, among Democrats, and in two out three cases among Republicans.

Related Standard Polls

When asked a general question about what approach the US should take to address international problems, a large bipartisan majority has preferred the US working with other countries, even if that means compromising, rather than working alone:

  • Asked whether they, “think it is better if the United States compromises with its allies in order to find collective solutions to international problems or do you think it is better if the United States works alone to find solutions to international problems,” a majority of 72% favor compromising with allies, including 63% of Republicans and 83% of Democrats. (YouGov/Economist, May 2025)

Asked whether the US working through the UN is important and a benefit to the US, majorities have said it is, although less than half of Republicans say it provides a benefit (down from half just a couple years prior):

  • Asked whether, “working with organizations like the United Nations to bring about world cooperation,” is an important foreign policy goal, 81% said very (62%) or somewhat important (19%), with just 10% saying not too important, and 9% not important at all. (Partisan breakouts are not available.) Asked the same question in 2013, 80% said very or somewhat important. (Gallup, 2025
  • Asked whether, “the U.S. benefits from UN membership,” 60% said it benefits, including 78% of Democrats, but just 42% of Republicans. Asked the same question two years earlier in 2022, a larger majority of 66% said it benefits, including half of Republicans (49%). (Pew Research Center, April 2024)

Survey: PPC, June 2025

A bipartisan majority of 81% favor the US participating in the UN Department of Peace Operations, which helps run the UN's peacekeeping activities. This includes 76% of Republicans and 89% of Democrats.

Briefing

Respondents were informed of the mission, main activities and budget of the UN Department of Peace Operations:

One of these major UN agencies is the UN Department of Peace Operations, which works to promote and monitor peace agreements between parties in conflict. UN peacekeeping operations can only take place if the main parties of the conflict agree to the presence of the peacekeepers.

All operations must also be approved by all of the five permanent members of the UN Security Council, including the US. In other words, the US and other permanent members can veto any operation.

Peacekeeping activities include:

  • monitoring ceasefires
  • providing protection for civilians
  • facilitating talks between opposing parties about ongoing issues
  • helping to rebuild government institutions

These operations are staffed by diplomats, military personnel, law enforcement officers, and civilians. They come from various countries.

There are currently 11 peacekeeping operations with about 60,000 personnel. The US generally only contributes a small number of military personnel (currently 26) who are usually higher ranking officials in charge of planning and coordinating missions. The US also provides military intelligence to the operations.

The biggest peacekeeping operations are currently in South Sudan and the Central African Republic, where there have been civil wars.

The annual budget for UN peacekeeping operations is about $6 billion.

Related Standard Polls

Asked about a specific situation in which the US could be involved in international peacekeeping activities - the Israel-Palestine conflict - a majority has been in favor:

  • Asked whether they would favor the use of US troops “to be part of an international peacekeeping force to enforce a peace agreement between Israel and the Palestinians,” 60% were in favor, and 36% in opposition. (Partisan breakouts are not available.) (Ipsos/Wall Street Journal, October 2023)

Survey: PPC, June 2025

A bipartisan majority of 79% favor the US participating in the World Health Organization, including 70% of Republicans and 91% of Democrats.

Respondents were informed of the World Health Organization's mission, main activities, and budget:

Another agency is the UN’s World Health Organization, with a mission to improve health globally, by:

  • tracking and studying diseases around the world
  • helping countries prepare for and respond to health emergencies, like pandemics
  • creating international guidelines and standards for healthcare
  • supporting vaccination programs and efforts to eliminate diseases
  • connecting researchers across the world and sharing information

The agency has an annual budget of around $3 billion.

Related Standard Polls

When asked a general question about the approach the US should take when providing global health aid, a bipartisan majority has preferred the US working together with other countries rather than working alone:

  • Asked whether they agree that “when giving aid to improve health in developing countries the US should participate in international efforts, so other countries will do their fair share and efforts will be better coordinated,” or whether they feel that “the US should operate on its own, so the US has more control over how the money is spent and gets more credit and influence in the country receiving aid,” 67% said that the US should participate in international efforts. This includes 78% of Democrats and 57% of Republicans. (SSRS/KFF, April 2019)

However, when asked whether the US should withdraw from the World Health Organization - shortly after the Trump administration started its withdrawal process - just half were opposed, with a large percent not providing an opinion, and a majority of Republicans were in favor.

  • Asked whether they support or oppose, “the U.S. withdrawing from the World Health Organization,” just 19% supported and 50% opposed, with 20% choosing “not sure”. Among Democrats, a majority were opposed (77%). Among Republicans, a majority were in support (58%). (YouGov, January 2025)

Status of US Participation in the WHO

In January 2025, the Trump administration started the one-year process of withdrawing the US from the WHO, and has prohibited federal employees from communicating with the WHO or its staff. It is unclear whether the President legally has unilateral authority to do so, but the majority of Members of Congress have not taken any action to either approve or nullify that decision, and so the process of withdrawal is proceeding.

Survey: PPC, June 2025

A bipartisan majority of 81% favor the US participating in the UN World Food Program, including 78% of Republicans and 88% of Democrats.

Respondents were informed of the mission, main tasks, and budget of the UN World Food Program:

Another agency is the UN World Food Program, with the mission to reduce hunger and save lives.

Its main tasks include:

  • delivering emergency food aid to people in crisis situations including military conflicts and environmental disasters (such as floods or droughts).
  • helping countries and regions to build food systems that are resilient to natural disasters, and which can provide adequate nutrition

Besides paying its dues, the US contributes food directly, which it purchases from US farmers. The agency has an annual budget that ranges from about $6 to 10 billion.


Survey: PPC, June 2025

A bipartisan majority of 83% favor the US participating in the UN International Children's Fund, including 79% of Republicans and 88% of Democrats.

Respondents were informed about the agency's mission and budget:

Another agency is the UN International Children’s Fund. It has a mission to help provide children with healthcare, education, and clean water, and protection from violence and exploitation (such as child labor). 

The agency has an annual budget of around $9 billion.

Survey: PPC, June 2025

A bipartisan majority of 77% favor the US participating in the UN Development Program, including 69% of Republicans and 87% of Democrats.

Respondents were informed of the agency's mission, main activities, and budget:

Another agency is the UN Development Program which has a mission to help countries find ways to reduce poverty and promote long-term economic development.

The UN Development Program offers technical help and advice for governments, and funding for non-profit organizations for projects that focus on:

  • workforce development through education and job training
  • clean energy and environmental protection
  • capacity to deal with natural disasters
  • treatment and rights of women and girls
  • democracy and fair elections

The agency has an annual budget of around $6 billion.

Survey: PPC, June 2025

A bipartisan majority of 73% favor the US participating in the UN Environment Program, including 63% of Republicans and 85% of Democrats.

Respondents were informed of the agency's mission, main activities, and budget:

Another agency is the UN Environment Program which has a mission to protect the environment and promote the safe and sustainable use of natural resources.

The UN Environment Program works with governments and non-governmental organizations to:

  • raise funding and provide technical help for projects to reduce pollution and increase clean energy production
  • help nations create and enforce environmental laws and agreements
  • study global environmental issues, such as pollution, climate change, and loss of wildlife and provide data to governments

The agency has an annual budget of a little under a billion dollars.

Survey: PPC, June 2025

A bipartisan majority of 70% favor the US participating in the UN Refugee Agency, including 59% of Republicans and 83% of Democrats.

Respondents were informed of the agency's mission, main activities, and budget:

Another agency is the UN Refugee Agency, which has a mission to help protect and support people who have been forced to flee their homes due to military conflict, violence, or persecution.

The UN Refugee Agency works with governments and non-governmental organizations, to help:

  • provide refugees with emergency shelter, food, and medical aid
  • find long-term solutions for refugees, such as returning them to their home nation once it’s safe, or helping integrate them into a new community
  • establish government policies that ensure refugees are treated fairly and have legal rights

The agency has an annual budget of around $11 billion.

Survey: PPC, June 2025

A bipartisan majority of 78% favor the US participating in the International Atomic Energy Agency, including 77% of Republicans and 83% of Democrats.

Respondents were informed of the agency's mission, main activities, and budget:

The International Atomic Energy Agency is an independent organization that works with the United Nations. Its mission is to help nations use nuclear energy safely and to prevent the spread of nuclear weapons.

Its main tasks are to:

  • set international safety standards for using nuclear materials
  • inspect nuclear facilities to make sure nuclear materials are not being used to make weapons
  • report to the UN Security Council about nations’ nuclear activities and possible risks

The agency has an annual budget of around half a billion dollars.

THE INTERNATIONAL CRIMINAL COURT

Survey: PPC, June 2025

A bipartisan majority of 62% favor the US joining the International Criminal Court, including 57% of Republicans and 72% of Democrats.

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Briefing

Respondents were presented a briefing on the International Criminal Court and what it does:

The ICC was created in 2002, and is located at The Hague, in the Netherlands. Currently, 124 nations are members of the ICC. 

The US is not a member of the ICC, nor are a few other major countries including China, Russia, and India.

Here is what the ICC does:

The ICC investigates and prosecutes individuals – usually high-ranking government or military leaders –  suspected of ordering a military force or police to commit:

  • war crimes, such as intentionally attacking or starving civilians
  • genocide, which is an attempt to eliminate an entire group of people, often because of their ethnicity or religion
  • crimes against humanity, such as widespread kidnapping, torture or enslavement of a group of people

The ICC has limited reach though. It can only try individuals for crimes committed against people who are living in nations that are official members of the ICC.

They were presented several examples of individuals indicted or tried by the ICC:

Since it was created, the ICC has issued charges against 61 people, of which 22 have been detained and tried at the ICC, with various outcomes. 

Here are two cases where people were sent to the ICC to be tried:

  • The first person tried and convicted at the ICC was the leader of a militia in the Democratic Republic of Congo. He was charged with using child soldiers. His government sent him to the ICC, where he was convicted in 2012, and sentenced to prison for 14 years. 
  • In 2025, the ICC issued an arrest warrant for former Philippine President, Rodrigo Duterte, to be tried for ordering the murder of thousands of civilians who were believed – without any trial – to be dealing drugs. The Philippine government detained him and sent him to the ICC, where he is awaiting a trial.

Here are cases where the ICC has issued arrest warrants, but the people have yet to be sent to the ICC:

  • In 2023, the ICC issued an arrest warrant for Russia’s president, Vladimir Putin, to be tried for ordering the Russian military to kidnap thousands of Ukrainian children.
  • In 2025, the ICC issued an arrest warrant for a senior leader of Hamas, a military force and political party in Palestine, to be tried for intentionally attacking civilians, and directing the military to use rape and torture, among other war crimes.
  • In 2025, the ICC issued an arrest warrant for Israel’s Prime Minister, Benjamin Netanyahu, to be tried for using mass starvation as a method of warfare (by blocking food from entering Gaza), and directing the military to attack civilians.

These individuals are unable to travel to any nation that is a member of the ICC without risk of arrest.

They were then informed what would happen if the US were to join:

The US would have a duty to:

  • detain any foreign individual in the US who has been charged by the ICC, and hand them over to the ICC
  • try in US courts any US citizen that is suspected of committing war crimes, genocide or crimes against humanity, or send them to the ICC to be tried.

The US would also gain the ability to directly influence:

  • elections of ICC judges and prosecutors
  • the ICC’s rules

Arguments

Both the arguments for and against the US joining the ICC were found convincing by bipartisan majorities, but the argument in favor did better overall, and among Democrats and independents. A roughly equal percent of Republicans found both arguments convincing.

Related Polling

A standard poll has found bipartisan majority support for the US becoming a member of the ICC, although the survey did not explain what responsibilities that would entail:

  • Asked whether the United States should participate in “the agreement on the International Criminal Court that can try individuals for war crimes, genocide, or crimes against humanity if their own country won’t try them,” 74% said the US should participate, including 81% of Democrats and 69% of Republicans. (Chicago Council, July 2018

A survey experiment in which different groups received different framings of the ICC and varying amounts of information about its activities found national majority support for the US being part of the ICC no matter the framing or amount of information received. They also found that the "vast majority support investigations and prosecutions," into anyone, including US military personnel, that may have violated human rights. (Foreign Policy Analysis, July 2025)

Survey: PPC, June 2025

In the case that the US disagrees with the ICC's decision to issue an arrest warrant for a US ally, a bipartisan majority of 71% do not want the US to sanction the ICC, including 68% of Republicans and 73% of Democrats. Sanctions were described as freezing US assets and barring entry to the US, and would apply to ICC staff, their family members, and any Americans providing assistance to the ICC. Instead, majorities prefer the US either take no action (46%) or limit itself to publicly criticizing the ICC (25%).

Briefing

Respondents were presented the proposal as follows:

There has been another debate over what the US should do if the ICC takes action against leaders or military personnel of nations that are allies of the US.

Historically, the US government has limited itself to criticizing the ICC when it disagrees with their decision.

A proposal has been put forward for the US government to take stronger actions by punishing individuals who work for or provide any help to the ICC – including judges and prosecutors – as well as their family members, by freezing their assets held in the US and blocking them from entering the US. This would apply to the Americans working for or helping the ICC.

Arguments

Both the pro and con arguments were found convincing by very similarly sized bipartisan majorities, with little difference between Republicans and Democrats.

Status of Proposal

In January 2025, the Trump administration issued an Executive Order to sanction the ICC staff, their family members, and anyone providing assistance to the ICC, in response to the ICC's issuance of an arrest warrant for Israel's Prime Minister Benjamin Netanyahu. These sanctions include freezing the US assets and barring entry into the US. In June 2025, the administration imposed sanctions of four ICC Judges.