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It was meant to be a routine discussion on pollution. One by one, delegates at the United Nations expressed support for a new panel of scientists who would advise countries on how to address chemicals and toxic waste.

But the U.S. delegate took the meeting in a new direction. She spent her allotted three minutes reminding the world that the United States now had a “national position” on a single word in the documents establishing the panel: gender.

“Use of the term ‘gender’ replaces the biological category of sex with an ever-shifting concept of self-assessed gender identity and is demeaning and unfair, especially to women and girls,” the delegate told the U.N. in June.

The Trump administration is pushing its anti-trans agenda on a global stage, repeatedly objecting to the word “gender” in international resolutions and documents. During at least six speeches before the U.N., U.S. delegates have denounced so-called “gender ideology” or reinforced the administration’s support for language that “recognizes women are biologically female and men are biologically male.”

The delegates included federal civil service employees and the associate director of Project 2025, the conservative blueprint for Trump’s policies, who now works for the State Department. They delivered these statements during U.N. forums on topics as varied as women’s rights, science and technology, global health, toxic pollution and chemical waste. Even a resolution meant to reaffirm cooperation between the U.N. and the Association of Southeast Asian Nations became an opportunity to bring up the issue.

Insisting that everyone’s gender is determined biologically at birth leaves no room for the existence of transgender, nonbinary and intersex people, who face discrimination and violence around the world. Intersex people have variations in chromosomes, hormone levels or anatomy that differ from what’s considered typical for male and female bodies. A federal report published in January, just before President Donald Trump took office, estimated there are more than 5 million intersex Americans.

On at least two occasions, U.S. delegates urged the U.N. to adopt its language on men and women, though it’s unclear if the U.S.’ position has led to any policy changes at the U.N. But the effects of the country’s objections are more than symbolic, said Kristopher Velasco, a sociology professor at Princeton University who studies how international institutions and nongovernmental organizations have worked to expand or curtail LGBTQ+ rights.

U.N. documents can influence countries’ policies over time and set an international standard for human rights, which advocates can cite as they campaign for less discriminatory policies, Velasco said. The phrase “gender ideology” has emerged as a “catchall term” for far-right anxieties about declining fertility rates and a decrease in “traditional” heterosexual families, he said.

At the U.N., the administration has promoted other aspects of its domestic agenda. For example, U.S. delegates have demanded the removal of references to tackling climate change and voted against an International Day of Hope because the text contained references to diversity, equity and inclusion. (The two-page document encouraged a “more inclusive, equitable and balanced approach to economic growth” and welcomed “respect for diversity.”)

But the reflexive resistance to the word “gender” is particularly noteworthy.

Advocates for LGBTQ+ rights said the U.S.’ repeated condemnation of “gender ideology” signals support for more repressive regimes.

The U.S. is sending the world “a clear message: that the identities and rights of trans, nonbinary, and intersex people are negotiable,” Ash Lazarus Orr, press relations manager at the nonprofit Advocates for Trans Equality, said in a statement.

Laurel Sprague, research director at the Williams Institute, a policy center focused on sexual orientations and gender identities at the University of California, Los Angeles, said she’s concerned that other countries will take similar positions on transgender rights to gain favor with the U.S. Last month Mike Waltz, Trump’s nominee for ambassador to the U.N., told a Senate committee that he wants to use a country’s record of voting with or against the U.S. at the U.N. as a metric for deciding foreign aid.

In response to detailed questions from ProPublica, White House Deputy Press Secretary Anna Kelly said in a statement: “President Trump was overwhelmingly elected to restore common sense to government, which means focusing foreign policy on securing peace deals and putting America First — not enforcing woke gender ideology.”

A clash between Trump’s administration and certain U.N. institutions over transgender rights was almost inevitable.

Trump’s hostility to transgender rights was a key part of his election campaign. On his first day in office, he issued an executive order called “Defending women from gender ideology extremism and restoring biological truth to the federal government.” The order claimed there were only two “immutable” sexes. Eight days later, Trump signed an executive order restricting gender-affirming surgery for anyone under 19. Federal agencies have since forced trans service members out of the military and sued California for its refusal to ban trans athletes from girls’ sports teams.

In June, the U.N. High Commissioner for Human Rights criticized American government officials for their statements “vilifying transgender and non-binary people.” The human rights office urges U.N. member states to provide gender-affirming care and says the organization has “affirmed the right of trans persons to legal recognition of their gender identity and a change of gender in official documents, including birth certificates.” The office also supports the rights of intersex people.

“Intersex people in the U.S. are extremely worried” that they will become bigger targets, said Sylvan Fraser Anthony, legal and policy director at the intersex advocacy group InterACT.

“In all regions of the world, we are witnessing a pushback against women’s human rights and gender equality,” Laura Gelbert Godinho Delgado, a spokesperson for the U.N.’s human rights office, said in an email. “This has fueled misogyny, anti-LGBTI rhetoric, and hate speech.”

The Trump administration’s insistence on litigating “gender” complicates the already ponderous procedures of the U.N. Many decisions are made by consensus, which could require representatives from more than 100 countries to agree on every word. Phrases and single words still under debate are marked with brackets. Some draft documents end up with hundreds of brackets, awaiting resolution at a subsequent date.

At the June meeting on chemical pollution, delegates decided to form a scientific panel but couldn’t agree on crucial details about whether the panel’s purpose included “the protection of human health and the environment.” A description of the panel included brackets on whether it would work in a way that integrates “gender equality and equity” or “equality between men and women.”

The U.S. delegate, Liz Nichols, reminded the U.N. at one point that it “is the policy of the United States to use clear and accurate language that recognizes women are biologically female and men are biologically male. It is important to acknowledge the biological reality of sex to support the needs and perspectives of women and girls.”

Career staffers like Nichols are hired for subject-matter expertise and work to execute the agenda of whichever administration is in charge, regardless of personal beliefs. Nichols has a doctorate in ecology from Columbia University and has worked for the State Department since 2018. When asked for comment, she referred ProPublica to the State Department.

A State Department spokesperson said in a statement, “As President Trump’s Executive Orders and our public remarks have repeatedly stated, this administration will continue to defend women’s rights and protect freedom of conscience by using clear and accurate language and policies that recognize women are biologically female, and men are biologically male.”

Gender is a crucial factor in chemical safety, said Rachel Radvany, environmental health campaigner at the Center for International Environmental Law who attended the meeting. Pregnant people are uniquely vulnerable to chemical exposure and women are disproportionately exposed to toxic compounds, including through beauty and menstrual products.

Radvany said the statement read by Nichols contributed to the uncertainty on how the panel would consider gender in its work. The brackets around gender-related issues and other topics remained in the draft decision and will have to be resolved at a future gathering that may not happen until next summer.

The U.S. has also staked out similar positions at U.N. meetings focused on gender. At a session of the Commission on the Status of Women in March, Jonathan Shrier, a longtime State Department employee who now works for the U.S. Mission to the United Nations, said the U.S. disapproved of a declaration supporting “the empowerment of all women and girls” that mentioned the word “gender.” The phrase “all women and girls” in U.N. documents has been used as a way to be inclusive of trans women and girls.

Shrier read a statement saying that several factors in the text made it impossible for the U.S. to back the resolution, which the commission had recently adopted. That included “lapses in using clear and accurate language that recognizes women are biologically female and men are biologically male.”

During the summit, Shrier repeated those talking points at an event co-sponsored by the U.S. government and the Center for Family and Human Rights, or C-Fam. The group’s mission statement says its goal is the “preservation of international law by discrediting socially radical policies at the United Nations and other international institutions.”

Shrier directed questions to the U.S. Mission to the United Nations, which did not respond. Responding to questions from ProPublica, C-Fam’s president, Austin Ruse, said in a statement that the U.S. position on gender is in line with the definitions found in an important U.N. document on the empowerment of women from 1995.

Some countries have pushed back against the U.S.’ stance, often in ways that appear subtle to the casual observer. The U.N. social and environmental forums where these speeches have been delivered tend to operate with a culture of civility and little direct confrontation, said Alessandra Nilo, external relations director for the Americas and the Caribbean at the International Planned Parenthood Federation. Nilo has participated in U.N. forums on HIV/AIDS and women’s health since 2000.

When other delegates speak out in support of diversity and women’s rights, it’s a sign of their disapproval and a way to isolate the U.S., Nilo said. During the women’s rights summit, the delegate from Brazil celebrated “the expansion of gender and diversity language” in the declaration.

Nilo said many countries are scared to speak out for fear of losing trade deals or potential foreign aid from the U.S.

Advocating an “America First” platform, Trump has upended U.S. commitments to multinational organizations and alliances. He signed orders withdrawing the U.S. from the World Health Organization and various U.N. bodies, such as the Human Rights Council and the cultural group UNESCO.

It’s rare for the U.N. to directly affect legislation in the U.S. But the Trump administration repeatedly cites concerns that U.N. documents could supersede American policy.

In April, the U.S. criticized a draft resolution on global health debated at a meeting of the U.N. Commission on Population and Development. Spencer Chretien, the U.S. delegate, opposed references to the U.N.’s Sustainable Development Goals, which provide a blueprint for how countries can prosper economically while improving gender equality and protecting the environment. Chretien called the program a form of “soft global governance” that conflicts with national sovereignty. Chretien also touted the administration’s “unequivocal rejection of gender ideology extremism” and renewed membership in the Geneva Consensus Declaration, an antiabortion document signed by more than 30 countries, including Russia, Hungary, Saudi Arabia and South Sudan. The first Trump administration co-sponsored the initiative in 2020 before the Biden administration withdrew from it.

Chretien helped write Project 2025 when he worked at The Heritage Foundation. He is now a senior bureau official in the State Department’s Bureau of Population, Refugees and Migration. Chretien couldn’t be reached for comment.

The U.N. proposal on global health faced additional opposition from Burundi, Djibouti and Nigeria, where abortion is generally illegal. Delegates from those countries were upset about references to “sexual and reproductive health services,” which could include abortion access. The commission chair withdrew the resolution, seeing no way to reach consensus.

During a July forum about a document on sustainable development, the U.S. delegate, Shrier, asked for a vote on several paragraphs about gender, climate change and various forms of discrimination. In his objections, he cited two paragraphs that he argued advanced “this radical abortion agenda through the terms ‘sexual and reproductive health’ and ‘reproductive rights.’”

The final vote on whether to retain those paragraphs was 141 to 2, with only the U.S. and Ethiopia voting no. (Several countries abstained.)

When the results lit up the screen, the chamber broke into thunderous applause.

Doris Burke contributed research.