It was unclear whether the rest of the Bay Area would also be free from federal enforcement efforts, as was promised for San Francisco.

The immigration operation that was supposed to occur in the Bay Area on Thursday, was stopped even before it got started, KTVU has learned, and stems from a late-night phone call between San Francisco's mayor and President Donald Trump.

Officials say Border Patrol's operations in the Northern California area could start as early as later this week, but that the timing could shift.

San Jose and Santa Clara County both introduced proposals that would protect places like parks, parking lots and property from being used as staging grounds during immigration operations without an official warrant.

Mayor Daniel Lurie said the National Guard cannot arrest drug dealers and opposed President Donald Trump's deployment plan for San Francisco crime crackdown.