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.

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.

Trump lawyers told the court that Trump has "no obligation" to consult, or even notify California Gov. Newsom before federalizing National Guard troops to quell anti-ICE protests.

California Gov. Gavin Newsom has embraced a new attack line in his ongoing showdown with Donald Trump: The president — who turns 79 on Saturday — is slipping. "He is not the same person that I dealt with just four years ago,

The public fight between California Gov. Gavin Newsom and President Donald Trump keeps intensifying, with name calling, insults and accusations traded over television and social media networks.

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.

Georgetown law professor Stephen Vladeck joined "Forbes Newsroom" to discuss the legality behind President Donald Trump deploying members of the National Guard in L.A.