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Clean Air Act

Mar 19, 2026

Colorado joins lawsuit over EPA climate rollback

Colorado joins lawsuit challenging EPA rollback of greenhouse gas rules, aiming to preserve climate standards tied to vehicle emissions.

Mar 5, 2026

Colorado challenges EPA rejection of regional haze plan

Colorado filed a lawsuit challenging the EPA’s rejection of its regional haze plan aimed at reducing air pollution and improving visibility in national parks.

Jan 30, 2026

Trump climate rollback stalls amid court challenge fears

The Trump administration has delayed repealing the EPA’s endangerment finding amid concerns the climate rollback may fail in court.

Jul 29, 2025

Trump EPA seeks repeal of key climate change finding

Trump's EPA proposes repealing the 2009 endangerment finding, a move that could dismantle climate regulations tied to greenhouse gas emissions.

Feb 27, 2025

EPA wants to repeal a landmark environmental finding

Environmental Protection Agency Administrator Lee Zeldin has privately urged President Donald Trump's administration to reconsider a scientific finding that has long been the central basis for U.S. action against climate change.