The Trump administration has made preparations to expand its nationwide crackdown on illegal immigration in the San Francisco area with a team of Border Patrol agents, two U.S. officials familiar with the internal plans told CBS News on Wednesday.

The officials, who requested anonymity because they were not authorized to talk to the media, said Border Patrol's operations in the Northern California area could start as early as later this week, but that the timing could shift.

One of the U.S. officials said the Border Patrol agents would stage at the U.S. Coast Guard base in Alameda, roughly 15 miles from San Francisco. That plan was reported earlier Wednesday by The San Francisco Chronicle . The Department of Homeland Security oversees Border Patrol, Immigration and Customs Enforcement

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