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EPA Proposes to Repeal Foundational Greenhouse Gas Endangerment Finding

A public comment period through September sets the stage for legal challenges ahead of a decision due by year-end.

Vehicles drive along a highway Wednesday, July 30, 2025, in Cincinnati. (AP Photo/Joshua A. Bickel)
A view of cars on the road during a rush hour traffic jam in San Francisco, California on August 24, 2022. REUTERS/Carlos Barria
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Overview

  • On July 29 the EPA unveiled a proposal to rescind its 2009 endangerment finding that underpins federal limits on greenhouse gas emissions from power plants, vehicles and industry.
  • The Department of Energy issued a concurrent report by five scientists disputing key climate science, and both documents are open for public comment until mid-September.
  • Industry groups warn that revoking the finding could disrupt compliance plans and leave companies subject to a patchwork of state regulations.
  • Environmental and health advocates including the Union of Concerned Scientists and the NRDC have pledged to sue if the repeal moves forward.
  • The agency will review submissions, publish a final rule by year-end and prepare for protracted court battles over its authority under the Clean Air Act.