Overview
- President Donald Trump and EPA Administrator Lee Zeldin finalized the rescission of the 2009 determination that greenhouse gases endanger public health and withdrew federal tailpipe standards for light-, medium- and heavy-duty vehicles.
- EPA says the rollback will deliver more than $1.3 trillion in economic savings and reduce new-vehicle prices by roughly $2,400, while supporters argue it restores consumer choice and eases industry mandates.
- California’s governor and attorney general pledged to sue, NRDC said it is going to court, and state and local air regulators warned of health harms as environmental groups prepare broader legal challenges.
- Analysts report immediate market effects, with Ford halting the F-150 Lightning, GM converting its Michigan Orion plant back to gasoline models, and Stellantis canceling planned EVs and plug-in hybrids as U.S. EV sales lag global growth.
- The move sets up a test of agency authority shaped by Massachusetts v. EPA, West Virginia v. EPA and the end of Chevron deference, with critics warning of lost climate gains including a projected 7.2 billion metric tons of emissions reductions from the now-scrapped vehicle rules.