Trump Administration Moves to Repeal EPA Greenhouse Gas Endangerment Finding

The Trump administration announced plans to rescind the Environmental Protection Agency’s (EPA) “endangerment finding,” which since 2009 has served as the legal foundation for U.S. greenhouse gas regulations. The repeal, unveiled by EPA Administrator Lee Zeldin and Energy Secretary Chris Wright at an Indiana car dealership, would eliminate federal limits on carbon emissions from vehicles, power plants, and industrial sources, potentially dismantling key U.S. climate policies.

Zeldin described the move as the largest deregulatory action in U.S. history, projecting $54 billion in annual cost savings. He cited a 2024 Supreme Court ruling limiting federal agency authority, asserting that regulating greenhouse gases now requires explicit Congressional approval. Critics argue this reversal undermines climate action as extreme weather intensifies, with Earthjustice calling it “the end of U.S. efforts to address climate change.”

The original finding stemmed from the 2007 Supreme Court case Massachusetts v. EPA, which recognized the agency’s authority under the Clean Air Act to regulate greenhouse gases. The decision laid the groundwork for Obama-era vehicle tailpipe standards, methane regulations, and carbon controls on power plants.

Automakers and industry groups offered mixed reactions. The American Trucking Associations praised the repeal, saying Biden-era tailpipe standards threatened supply chains. Ford called for a unified, science-based emissions standard, while Toyota, GM, and Stellantis declined comment. The U.S. Chamber of Commerce welcomed lower energy costs but said it is reviewing the proposal.

California regulators condemned the decision, calling it “polluter fantasyland over proven science.” The move is expected to face legal challenges from states and environmental organizations, as it conflicts with international climate obligations, including the Paris Agreement.