US states sue Trump EPA over decision to repeal bedrock climate finding

The Guardian US News
by Dharna Noor
March 19, 2026
3 min read

Quick Insights

The Bottom Line

Twenty-four states sued Trump EPA for revoking the scientific finding that greenhouse gases threaten public health.

How This Affects You

Rescinding climate endangerment findings could eliminate federal regulations controlling air and water pollution that protect your health and environment.

AI Summary

A coalition of 24 states, a dozen cities and counties, led by Massachusetts, California, New York and Connecticut, has sued the Trump administration in federal court to challenge the EPA's revocation of the scientific finding that greenhouse gases endanger public health. That determination, known as the endangerment finding, has served as the legal foundation for virtually all federal climate regulations since 2009. The lawsuit argues the rescission was illegal and seeks to restore the ruling, which underpins rules governing emissions from vehicles, power plants and industrial facilities. The Trump administration's decision to overturn the finding represents one of the most significant rollbacks of climate policy in the federal government, potentially invalidating or severely limiting enforcement of existing environmental protections.

What's Being Done

A coalition of 24 states, plus a dozen cities and counties, filed a lawsuit in the U.S. Court of Appeals for the District of Columbia challenging the rescission.

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