California launches a public health network with former CDC chiefs amid federal agency changes under the Trump administration.

Republicans and Democrats square off in court Monday in a high-stakes battle over the fate of California's Proposition 50, which reconfigures the state's congressional districts and could ultimately help determine which party controls the U.

Federal authorities said Monday that they foiled a plot to bomb multiple sites of two US companies on New Year’s Eve in Southern California after arresting members of an extremist anticapitalist and antigovernment group.