Overview

• EPA Administrator Lee Zeldin unveiled the July 29 proposal to rescind the 2009 endangerment finding that underpins greenhouse gas regulations under the Clean Air Act.
• The agency claims overturning the finding would save Americans about $54 billion annually by eliminating federal emission standards for motor vehicles and engines.
• A Department of Energy report issued alongside the EPA proposal challenges mainstream climate models and projected economic impacts of greenhouse gas limits.
• The rulemaking process includes a 45-day public comment period ending Sept. 21, with a final rule expected by year-end.
• Environmental advocacy groups, former officials and congressional Democrats have vowed to sue to block the repeal and defend existing climate protections.