Enviros, health groups are first to sue over Trump’s big climate rollback

By Lesley Clark | 02/18/2026 01:46 PM EST

Young climate activists are also going to court over EPA’s repeal of a landmark Obama-era scientific finding.

The E. Barrett Prettyman Federal Courthouse is seen.

The legal battle over EPA's endangerment finding repeal will land before a powerful federal appeals court in Washington. The E. Barrett Prettyman Federal Courthouse, which houses the U.S. Court of Appeals for the District of Columbia Circuit, is shown. Jose Luis Magana/AP

The Trump administration’s decision to revoke EPA’s legal foundation for climate rules drew its first court challenges Wednesday from a coalition of health and environmental groups and 18 young people.

Two petitions filed in the U.S. Court of Appeals for the District of Columbia Circuit challenged EPA’s decision last week to roll back the 2009 endangerment finding, which identified climate pollution as a threat to public health. The lawsuits — filed hours after the repeal was published in the Federal Register — are the first to challenge the move, though more petitions are expected, including from some Democratic-led states.

“Undercutting the ability of the federal government to tackle the largest source of climate pollution is deadly serious, but the administration’s legal and scientific reasons for doing so are a joke,” said Meredith Hankins, legal director for federal climate at the Natural Resources Defense Council.

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NRDC’s lawsuit named EPA and its administrator, Lee Zeldin, as respondents. Earthjustice and the Environmental Defense Fund are also among the challengers, as well as health groups including the American Public Health Association and American Lung Association.

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