Overview

• The EPA has formally proposed to withdraw its 2009 endangerment finding, eliminating the legal determination that heat-trapping greenhouse gases threaten public health under the Clean Air Act.
• The rule would also repeal 2024 vehicle and power plant greenhouse gas standards that were projected to reduce over seven billion tons of emissions from cars and 1.38 billion metric tons of CO₂ from power plants through 2047.
• The agency’s case relies on a Department of Energy report widely criticized by climate scientists for cherry-picked evidence and denialist tropes.
• Automakers have voiced concern that the rollback and regulatory uncertainty could slow electric vehicle deployment and undermine long-term planning.
• States, environmental groups and industry stakeholders are preparing immediate legal challenges, arguing the repeal flouts Administrative Procedure Act requirements and Supreme Court limits on EPA authority.