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.

Over the years, Trump has threatened to intercede in the state’s long-running homeless crisis, vowed to withhold federal wildfire aid as political leverage in a dispute over water rights, called on police to shoot people robbing stores and warned residents “your children are in danger” because of illegal immigration.

California Governor Gavin Newsom is establishing himself as Donald Trump's main opponent following Los Angeles protests against migrant arrests. The ambitious 57-year-old Democrat sharply criticizes the deployment of thousands of soldiers in the megacity,