The 9th Circuit Court will hear arguments Tuesday in a high-profile legal battle between President Trump and Governor Newsom over who has authority to control California’s National Guard.

A coalition of over 50 local governments and officials has filed an amicus brief in support of California Governor Gavin Newsom's opposition to President Trump's federalization and deployment of the California National Guard,

President Donald Trump and his immigration czar, Tom Homan, have suggested that Newsom could face arrest over "obstructive" behavior.