Trump also revoked two other Biden-era waivers from California Thursday. Those would have allowed California to require vehicle makers to produce an increasing number of zero-emission heavy-duty trucks, and another to reduce nitrogen oxides, a component of smog, from heavy-duty highway and off-road vehicles and engines.

For all of Donald Trump's talk agreeing with the idea of arresting California governor Gavin Newsom, the president couldn't offer even a hypothetical reason to do so when asked this week, which Seth Meyers was pretty amused by on Wednesday night.

What the judge rules, and the likely appeals that follow, may alter decades of understanding about the roles of governors and the White House in quelling domestic unrest.

The Justice Department claims California's request to limit the federal response to violent riots in Los Angeles would "countermand" the president's lawful military directives.

President Donald Trump’s lawyers cited a post from Sen. John Fetterman in their legal response to California Gov. Gavin Newsom’s motion to block the deployment of troops in Los Angeles. Fetterman, D-Pa.

Los Angeles Mayor Karen Bass issued a curfew for parts of downtown as anti-ICE demonstrations continued for a fifth consecutive day, some of which have turned violent between protesters and law enforcement.

Protests surrounding immigration enforcement actions in the Los Angeles area and the Trump administration's response to them have cued up a public spat between President Trump and Gov. Newsom.

Tuberville recently joined President Donald Trump in calling for Newsom’s arrest after he claimed the federal government was overstepping its bounds when Trump activated the National Guard -- without the governor’s permission to maintain order in Los Angeles.