States, cities challenge Trump mileage standards rollback

DENVER (AP) — Nearly two dozen states and several cities on Wednesday filed a legal challenge to the Trump administration’s rollback of Obama-era mileage standards, saying science backed up the old regulations developed with the help of the nation's car makers.

They asked the U.S. Court of Appeals for the District of Columbia Circuit to review the actions by the U.S. Environmental Protection Agency, the Department of Transportation Department and its National Highway Traffic Safety Administration that led to the Safer Affordable Fuel-Efficient (SAFE) Vehicles rule issued in March. A coalition of environmental groups also filed a similar petition with the court.

The new mileage standards require automakers to achieve 1.5% annual increases in fuel efficiency. The Obama-era standards called for 5% annual increases and were seen as the government's most forceful initiative against climate-changing fossil fuel emissions.

The EPA does not comment on pending litigation but spokesperson Corry Schiermeyer said it provides a “sensible, single national program that strikes the right regulatory balance, protects our environment, and sets reasonable targets for the auto industry, while supporting our economy and the safety of American families.”

However, California Attorney General Xavier Becerra said internal EPA documents show that the administration ignored warnings from its experts that the rule had serious flaws and the states and cities would seek the release of such documents to prove their case.

The states and cities claim the rule violates the Clean Air Act, the Energy Policy and Conservation Act and the Administrative Procedure Act.

The challenge is about making sure the government is upholding the rule of law and acting based on facts and science, Colorado...