EV-related policy in the U.S. combines several tools: federal vehicle emissions standards (set by EPA and NHTSA) that effectively push manufacturers toward electrification, federal consumer tax credits (expanded by the Inflation Reduction Act), grants for chargers and battery manufacturing, and state-level zero-emission-vehicle (ZEV) requirements led by California under its Clean Air Act waiver.
California's Advanced Clean Cars II rule requires 100% of new passenger vehicles sold to be zero-emission by 2035. Roughly a dozen states follow California's standards. EPA's recent multi-pollutant vehicle rules tighten emissions standards but stop short of an explicit ICE phaseout.
Debates center on the pace of transition, grid and charging readiness, costs to lower-income buyers, the trade balance of imported critical minerals, domestic manufacturing and jobs, and whether technology-neutral emissions standards or explicit EV mandates are the right tool.