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ARTICLE · 04 AUGUST 2025

EPA Initiates Rulemaking To Eliminate The 2009 GHG Endangerment Finding

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The U.S. Environmental Protection Agency ("EPA") proposes rescission of the 2009 Endangerment Finding, which underpins greenhouse gas regulation under the Clean Air Act.

United StatesEnvironment
Donald McGahn II
Donald McGahn II
Daniella Einik
Daniella Einik
Kevin Holewinski
Kevin Holewinski
Jane Murphy
Jane Murphy
Jane Borthwick Story
Jane Borthwick Story
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Charles Wehland
Tyler Larsen
Tyler Larsen
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Mari Reott
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The U.S. Environmental Protection Agency ("EPA") proposes rescission of the 2009 Endangerment Finding, which underpins greenhouse gas regulation under the Clean Air Act.

In alignment with EPA's goal to revisit regulations on the emission of greenhouse gases ("GHGs"), the EPA published a proposed rule rescinding the 2009 Endangerment Finding and Greenhouse Gas Vehicle Standards on July 29, 2025. This action marks the most sweeping reexamination of federal climate policy since the 2009 endangerment determination was first issued. The 2009 determination concluded, under Section 202(a) of the Clean Air Act ("CAA"), that six GHGs from new motor vehicles contribute to air pollution that could endanger public health or welfare, thereby allowing EPA regulation.

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