CARB comments on EPA effort to overturn its endangerment finding

The California Air Resources Board (CARB) has submitted comments opposing the U.S. Environmental Protection Agency’s (EPA) proposal to overturn its 2009 endangerment finding. On July 29, 2025, EPA proposed to rescind the 2009 Greenhouse Gas Endangerment Finding, which has guided federal actions to address greenhouse gas pollution.

CARB’s comments note that EPA’s proposal ignores more than 15 years of its own research and regulations, and emphasizes that EPA is obligated to address greenhouse gas emissions and adopt strong standards to reduce them.

To view documents supporting this proposed rulemaking as well as comments submitted, visit regulations.gov and access the rule under Docket ID No. EPA-HQ-OAR-2025-0194.