Environmental Protection Agency acting administrator Andrew Wheeler confirmed Wednesday that the Trump administration this week will release a proposal to weaken Obama-era fuel efficiency standards. Wheeler, in his first testimony before Congress since replacing Scott Pruitt, said he hopes to come up with a “50-state solution” to car pollution rules without taking away the authority of California to set its own standards.

“It’s my goal to come up with a 50-state solution that does not necessitate pre-empting California,” Wheeler told the Senate Environment and Public Works Committee.