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Health and environmental groups sue EPA over endangerment finding repeal

U.S. President Donald Trump (L) speaks alongside U.S. Environmental Protection Agency Administrator Lee Zeldin during an event to announce a rollback of the 2009 Endangerment Finding in the Roosevelt Room at the White House on February 12, 2026 in Washington, DC. (Photo by Anna Moneymaker/Getty Images)

(WASHINGTON) -- Less than a week after the Environmental Protection Agency repealed its own endangerment finding, which gave the agency authority to regulate greenhouse gas emissions, a coalition of health and environmental organizations sued the agency over its decision.

The case, filed in the U.S. Court of Appeals for the District of Columbia Circuit, is being brought by the American Public Health Association, the American Lung Association, the Center for Community Action and Environmental Justice, Physicians for Social Responsibility, the Union of Concerned Scientists, the Center for Biological Diversity, the Natural Resources Defense Council and the Sierra Club, among others.
The lawsuit names EPA Administrator Lee Zeldin and the EPA as defendants.

Made during the Obama administration, the 2009 decision found that certain greenhouse gases endanger public health and welfare. The regulations that resulted cover everything from vehicle tailpipe emissions to the release of greenhouse gases from power plants and other significant emission sources.

President Donald Trump announced the repeal at the White House last Thursday, alongside Zeldin.
"The Endangerment Finding has been the source of 16 years of consumer choice restrictions and trillions of dollars in hidden costs for Americans," Zeldin said in a statement at the time.
The litigants in the case say that "Under the Clean Air Act, the EPA is legally required to limit vehicle emissions of any 'air pollutant' that the agency determines 'cause or contribute to air pollution that may reasonably be anticipated to endanger public health or welfare.' "
The coalition says the Trump Administration is "rehashing legal arguments" that were already rejected by the Supreme Court in its 2007 Massachusetts v. EPA case.
"In keeping with a longstanding practice, EPA does not comment on current or pending litigation," the agency said in a statement to ABC News.