https://thinkprogress.org/epa-end-california-waiver-freeze-fuel-economy-standards-2020-ea5ac66b8fed/
"Just one day after Environmental Protection Agency (EPA) Administrator Scott Pruitt told lawmakers on Capitol Hill that the agency did not have plans “at present” to target California’s special fuel economy waiver, the Trump administration announced that it would be putting a six-year hold on Obama-era standards for fuel efficiency, starting in 2020, while at the same time revoking California’s waiver to set its own standards. The move undercuts the Obama administration’s attempt to reign in carbon emissions from the transportation sector, and tees up a fight between the federal government and a state that has challenged Trump’s deregulatory agenda at nearly every turn. According to the Los Angeles Times, the EPA plans to submit a draft for fuel economy targets to the White House within the next few days. Pruitt had previously announced that the agency was reconsidering the Obama administration’s fuel economy standards, which dictate how much a car can emit."