Demonstrators in San Francisco, Calif., attempted to block ICE agents from moving detainees from an immigration courthouse to a waiting van. KNTV's Thom Jensen reports.

Federal immigration agents seeking to detain a Honduran landscaper chased him into a Southern California surgical center and quickly found themselves in a tense standoff as clinic staff demanded to see identification and a warrant.

Guards linked to the Department of Homeland Security have camped out in the lobby of a Glendale hospital to monitor a woman patient who was arrested by federal agents, intimidating nurses and others.

Bishop Alberto Rojas, who leads more than 1.5 million Catholics in Southern California, has formally excused parishioners from their weekly obligation to attend Mass following immigration

ICE can put in a civil detainer requesting that departments give them a heads-up when a suspect will be released. A California law allows departments the choice to honor the request or not.

Videos captured a scuffle between protesters and immigration agents outside a courthouse. No injuries were immediately reported, the police said.

Providers say patients are feeling betrayed by recent activity and unrolling from health insurance or not showing up to appointments.

California Gov. Gavin Newsom pointed to the decree to highlight the Trump administration's aggressive immigration enforcement actions.