Governor Gavin Newsom accused President Donald Trump of being “not all there” as the pair ramp up their war of words over federal troops being deployed to Los Angeles. The California governor made the damning accusation about the 78-year-old president during an interview on The Daily podcast.

An escalating clash pits a Republican president looking to fulfill his mass deportation goals against a Democratic governor with White House aspirations hoping to mobilize opposition.

The state of California had sought to stop the president from sending National Guard troops without the governor’s approval.

California Gov. Gavin Newsom questions Trump's mental and physical ability as their clash over immigration enforcement rages on.

President Donald Trump has quashed California’s electronic vehicle mandate, accusing Gavin Newsom of trying to “kill” the auto industry and setting off another legal battle with the Democratic governor.

Hours after a federal judge sided with Gov. Gavin Newsom over Donald Trump's deployment of the National Guard in Los Angeles, an appeals court has blocked the ruling.

California Gov. Gavin Newsom had sued Trump in an attempt to block the deployment of federal troops in the city, which Newsom has called a “serious breach of state sovereignty.”

Gavin Newsom won praise on Wednesday for his speech Tuesday night seen by a national audience, something many Democrats saw as a shot across the bow to President Donald Trump that they can fight Trump -- and one that sparked new talk of Newsom as the party's standard-bearer in 2028.

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.

Former Attorney General Bill Barr slams Gov. Gavin Newsom’s lawsuit over Trump’s National Guard deployment, calling the claims ‘nonsense.'