GM, Fiat Chrysler side with Trump in California mpg fight

The automakers had faced pressure from Democratic lawmakers to join the voluntarily agreement with California.

Michigan has joined California and 21 other states in suing to stop the Trump administration from revoking the Golden State's authority to set emission standards for cars and trucks.

California has already sued over the Trump administration's proposed rollback of stringent fuel economy rules that were adopted by the Obama administration in 2012.

are siding with the Trump administration in a legal fight with California over the gas mileage rules that govern the nation's automobile industry. (The Detroit News)