The finding gave the government the authority to regulate such pollution.
For several days, the White House and EPA refused to release the results of a 30-day review of the endangerment finding, which President Donald Trump called for under an executive order he issued on his first day in office.
Three people with knowledge of the issue, who remained anonymous, told the Post that former EPA Chief of Staff Mandy Gunasekara—who wrote the chapter on the agency in the right-wing policy agenda Project 2025—has been advising the administration on the potential repeal of the endangerment finding.
Another former official from Trump's first term, attorney Jonathan Brightbill, is also providing legal advice on repealing the scientific finding, which has provided the basis for federal regulations on automobile, aircraft, and power plant emissions.
By repealing the endangerment finding in place, the administration would throw out thousands of scientific studies showing how fossil fuel emissions heat the planet and are linked to heart disease, lung cancer, asthma, and other life-threatening health problems—and clear the way to overturn climate policies introduced by former President Joe Biden.
Denying the science underpinning the finding, said Green New Deal co-sponsor Sen. Ed Markey (D-Mass.), makes the administration "a danger to our country."
Rachel Cleetus, policy director with the Union of Concerned Scientists' Climate and Energy Program, said that any attempt by the Trump administration to gut the endangerment finding would be "fully challenged in court."
"Eliminating the endangerment finding would be a giveaway to the fossil fuel industry, which has spent decades lying to the public about the harms of their product," said Cleetus. "The science backing the EPA's finding is rigorous and unequivocal—heat-trapping emissions pose serious threats to public health and well-being. EPA has the authority and legal obligation under the Clean Air Act to regulate sources of these pollutants, including vehicles, power plants, and oil and gas operations."
Ben Jealous, executive director of the Sierra Club, also warned that the organization "will meet [the EPA] in court" if it moves forward with the repeal.
"Lee Zeldin is willing to go so far as to break established law to pay back the corporate executives and polluters who spent millions to get Donald Trump elected," said Jealous. "This breathtakingly illegal power grab defies both the Supreme Court and Congress, and if Trump agrees to this plan, the Sierra Club will meet them in court. We will never allow any administration to sell out the climate, our health, our clean air, and our future."
Zeldin is reportedly recommending that the finding be repealed weeks after wildfires destroyed more than 12,000 homes and other buildings in the Los Angeles area and after meteorologists reported a record 143 days last year of 100°F heat or higher last year. More than 100 people were killed last year by Hurricane Helene, which damaged about 74,000 homes.
"If the Trump EPA proceeds down this path and jettisons the obvious finding that climate change is a threat to our health and welfare, it will mean more polluted air and more catastrophic extreme weather for Americans."
Experts found that the fires that devastated Los Angeles were made 35% more likely by dry, hot weather conditions and that planetary heating made Helene more dangerous and destructive.
"Any recommendation to strike the finding would be a bad-faith attempt to circumvent the law and best available science with the sole aim of boosting fossil fuel use and the profits of polluting companies," said Cleetus. "Meanwhile, people around the nation, especially in communities acutely exposed to climate impacts or pollution, will pay the price."
Dominique Browning, director and co-founder of Moms Clean Air Force, said the new reporting revealed that Zeldin "is contaminating EPA with a virulent strain of climate denial that has seized hold of many of the Trump administration's Cabinet members."
Browning noted that the EPA issued its determination in 2009 in response to the 2007 U.S. Supreme Court case Massachusetts v. EPA, which established that the agency has the authority to regulate greenhouse gases.
"EPA's action respected the ruling of the U.S. Supreme Court," said Browning. "It respected the bedrock science and respected what we all know to be true: Families across the country are experiencing the extreme weather fueled by climate emissions. With every new supercharged wildfire, hurricane, flood, and heatwave, the danger takes on a terrifying intimacy: Think of the summers that have become too hot for children to play outside, of the lifetime trauma of losing a home in a flood or fire."
"Administrator Zeldin's recommendation to strike down the endangerment finding will only bolster the billions of dollars of profit being made by the oil and gas industry—while ransacking our children's safety," Browning said.
David Doniger, senior strategist and attorney for climate and energy at the Natural Resources Defense Council, said Zeldin's reported plan "only makes sense if you consider who would benefit: the oil, coal, and gas magnates who handed the president millions of dollars in campaign contributions."
The fossil fuel industry poured nearly $450 million into Trump's campaign, and the president promised to roll back climate regulations if oil and gas companies donated heavily to him in what critics called a quid pro quo.
"This decision ignores science and the law," said Doniger. "Fifteen years ago, the EPA determined that climate pollution endangers our health and well-being. The Denali-sized mountain of scientific evidence behind that decision has only grown to Mount Everest–size since then. The courts have repeatedly upheld the EPA's legal authority and its scientific conclusions."
"This is the clearest example of the Trump administration putting polluters over people, and that's saying a lot," Doniger added. "If the Trump EPA proceeds down this path and jettisons the obvious finding that climate change is a threat to our health and welfare, it will mean more polluted air and more catastrophic extreme weather for Americans. We will see them in court."
