# Endangerment Finding

Type: policy

Source: Legal & RegTech Intelligence Brief — https://getlegalbrief.com/entity/endangerment-finding
Canonical HTML page: https://getlegalbrief.com/entity/endangerment-finding

## Timeline

- **2026-03-19**: 23-State Lawsuit Filed — States launch legal challenge against the Trump EPA's rescission efforts.
- **2009-12-07**: Endangerment Finding Issued — EPA officially determines GHGs pose a threat to public welfare.
- **2007-04-02**: Massachusetts v. EPA — Supreme Court rules EPA has authority to regulate GHGs if they endanger health.

## Recent coverage (1 stories)

### 23 States Sue Trump EPA to Protect Landmark Climate Endangerment Finding
2026-03-19 20:51:36 · Sentiment: Negative · Impact: 7/10 · Sources: 2

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.
Full story: https://getlegalbrief.com/story/states-sue-epa-climate-endangerment-finding

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