Endangerment Finding

policy

Last mentioned: Mar 19, 2026

Timeline

  1. 23-State Lawsuit Filed

    States launch legal challenge against the Trump EPA's rescission efforts.

  2. Endangerment Finding Issued

    EPA officially determines GHGs pose a threat to public welfare.

  3. Massachusetts v. EPA

    Supreme Court rules EPA has authority to regulate GHGs if they endanger health.

Stories mentioning Endangerment Finding 1

regulation Bearish

23 States Sue Trump EPA to Protect Landmark Climate Endangerment Finding

A coalition of 23 states has filed a major lawsuit against the Environmental Protection Agency to prevent the rescission of the 2009 Endangerment Finding. The legal challenge argues that the administration's attempts to decouple greenhouse gas emissions from public health threats violate the Clean Air Act and ignore decades of established climate science.

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