A broad coalition of the nation’s leading health, environmental, and scientific organizations filed a lawsuit today in the U.S. Court of Appeals for the D.C. Circuit, challenging the Trump administration’s unlawful repeal of the 2009 “Endangerment Finding.”
The Trump administration is facing a lawsuit over its decision to deregulate emissions and repeal a landmark scientific finding that linked greenhouse gases to human health problems, forming the basis of policies to address climate change.
— CBS News (@CBSNews) February 18, 2026
The lawsuit, brought by groups including the American Lung Association, Sierra Club, Union of Concerned Scientists, Clean Air Council, and the Center for Biological Diversity, argues that the administration’s move to strip away the scientific foundation for climate regulation is a violation of federal law and a direct assault on public safety.
For over 15 years, the Endangerment Finding has served as the legal bedrock for federal climate policy, establishing the scientific fact that greenhouse gas emissions endanger public health and welfare. By repealing this finding, the administration has moved to eliminate critical vehicle emission standards and placed dozens of other air quality protections at risk.
“We are suing to stop the administration from torching our children’s future in favor of a monster handout to oil companies,” said David Pettit, an attorney at the Center for Biological Diversity. “The EPA’s rollbacks are based on political poppycock, not science or law. Nobody but Big Oil profits from trashing climate science while families pay the price at the pump and in the ER.”
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The coalition notes that the Supreme Court has repeatedly reaffirmed the EPA’s obligation to regulate carbon pollution, most recently in 2022. The petitioners assert that the administration’s justifications for the repeal ignore decades of settled law and the current reality of the climate crisis.
Coalition Seeks a Court Order to:
- Vacate the repeal of the 2009 Endangerment Finding.
- Reinstating the legal requirement for the EPA to regulate greenhouse gas emissions.
- Prevent the administration from further dismantling fuel efficiency standards based on flawed legal logic.
“This isn’t just about policy; it’s about the air we breathe and the world we leave behind,” the coalition stated. “We expect the courts to uphold the science and the law, as they have done for nearly two decades.”
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