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States challenge Trump decision to revoke basis of US climate regulations

By Thomson Reuters Mar 19, 2026 | 12:33 PM

WASHINGTON, March 19 (Reuters) – Twenty-one states led by Democratic-governed New ​York and California ‌joined by 14 cities and counties sued President Donald Trump’s administration on ‌Thursday ​seeking to ⁠undo its decision ⁠to revoke the government’s scientific finding that underpins U.S. climate regulations, ​the New York Attorney General’s Office ⁠said.

The legal ⁠challenge filed against the ​Environmental Protection Agency in ​the U.S. Court of ‌Appeals for the District of Columbia takes aim at the ⁠agency’s move last month to terminate the government’s 2009 ⁠conclusion ‌that climate change ⁠endangers human health ​and ‌the environment. Trump ​has ⁠called climate change a hoax despite the scientific evidence.

(Reporting by David Shepardson, Editing by Franklin ​Paul)