Trump revokes 2009 EPA endangerment finding
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- President Donald Trump announced on 12 February that he was revoking the EPA’s 2009 endangerment finding on greenhouse gases.
- EPA administrator Lee Zeldin said the “elimination” of the finding would save “trillions” of dollars.
- The endangerment finding from 2009 concluded that six greenhouse gases—including CO₂, CH₄, N₂O, HFCs, PFCs, and SF₆—threaten public health and welfare, underpinning vehicle, power‑plant and other emissions standards.
- The revocation was formally published in the Federal Register on 18 February and is slated to take effect on 20 April.
- California, the Sierra Club, Earthjustice and the NRDC have pledged to sue, citing “significant legal and analytical vulnerabilities” in the EPA’s rule.
- Legal experts note the EPA’s argument—that the Clean Air Act only authorizes regulation of local pollutants, not “well‑mixed” greenhouse gases—directly conflicts with the 2007 Supreme Court ruling in Massachusetts v. EPA and the major‑questions doctrine.
Why it matters: By stripping the EPA of its legal footing to regulate six greenhouse gases, the repeal could let industry relax emissions standards, jeopardizing public‑health protections, while the administration touts trillions in savings. States and environmental NGOs are mobilizing lawsuits, meaning the ultimate impact hinges on court rulings rather than immediate policy change.
