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

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,

Gavin Newsom is hitting Donald Trump with an attack the president and his base know all too well: the president’s mental acuity. Trump and Newsom have squared off over the federalization and deployment of the National Guard to California in the wake of the anti-deportation protests — and some unrest — in Los Angeles.

President Donald Trump has mobilized more than 4,000 National Guard troops and 700 Marines to Los Angeles, setting up a clash with Gov. Gavin Newsom.

Gov. Gavin Newsom of California criticized President Trump’s decision to send the National Guard and the Marines to Los Angeles and asked people to “reflect on this perilous moment.”

Trump deployed 4,000 National Guardsmen and 700 Marines to LA against the wishes of Newsom and Bass. Newsom sued the Trump administration, saying they unlawfully "trampled over" California’s sovereignty when they federalized the California National Guard.