And in the balance of power between the Trump administration and the nation’s most populous state, California was on the losing end. “We’re at DEFCON 1 in the conflict between California and the Trump administration,

President Donald Trump signed legislation seeking to rescind California's ambitious auto emission standards, including a landmark rule that would've eventually barred sales of new gas-only cars in California by 2035.

President Donald Trump moved Thursday to eliminate California’s nation-leading vehicle emissions standards, upending strict rules that had become a template for states across the nation to realize their greenhouse gas ambitions.

President Donald Trump signed a resolution on Thursday that blocks California’s first-in-the-nation rule banning the sale of new gas-powered cars by 2035. California is expected to challenge the move in court.

The move sets up another battle with Gov. Gavin Newsom, who has sparred with Trump in recent days over the president’s intervention in L.A. protests.

A group of 11 states led by California on Thursday filed suit challenging a repeal by Congress of the state's 2035 electric vehicle rules and heavy duty truck requirements.U.S. President Donald Trump on Thursday signed three resolutions approved by lawmakers barring California's electric vehicle sales mandates and diesel engine rules,

Trump signed measures Thursday revoking waivers for the state's mandates that clean up car and truck exhaust and ramp up sales of electric vehicles. California and 10 other states immediately sued and the governor ordered the air board to craft a new mandate.

Their clash over Trump’s deployment of military forces for anti-ICE protests in Los Angeles is far from the first time the two leaders have butted heads.