Mixed Evidence
“The federal government is walking away from its tailpipe emissions rules, potentially allowing states to write their own standards”
The EPA under the Trump administration has taken steps to weaken or reconsider federal tailpipe emissions standards established during the Biden administration, and has indicated it may reconsider California's waiver to set its own vehicle emissions standards. However, the federal government has not completely abandoned all tailpipe emissions rules, and the legal framework determining whether states can set their own standards remains in flux pending final regulatory action.
climate_environment
5 sources
Updated Feb 19, 2026