Blocks & Files

California has filed a lawsuit leading a challenge to the Trump administration's rollback of fuel economy rules, according to the Los Angeles Times. The state is moving to block the weakened vehicle emissions standards, continuing its longstanding role as the primary legal opponent of federal efforts to relax automotive efficiency requirements.

California has filed a lawsuit seeking to block the Trump administration from weakening federal fuel economy standards for cars and light trucks. The state, which holds a longstanding waiver to set its own emissions rules, argues the rollback would increase pollution and consumer fuel costs. The legal challenge sets up another clash between California and the federal government over environmental authority, with other states expected to join the case.