ALAMEDA, Calif. (AP) — Law enforcement officers fired shots at a vehicle that backed into a U.S. Coast Guard base in the San Francisco Bay Area that had earlier been the site of protests against federal immigration agents, and hours after President Donald Trump called off a planned surge of federal agents into San Francisco to quell crime.

The San Francisco district attorney said in an interview that she came up with the strategy after seeing federal agents repeatedly roughing up people in Los Angeles and Chicago.

DA Brooke Jenkins said she doesn't believe federal agents being sent as part of a massive surge into San Francisco are interested in targeting criminals, but want to sow fear.

Trump has claimed “unquestioned power” and indicated he could justify deploying federal troops to San Francisco under the Insurrection Act, an 1807 law that gives the federal government authority to suppress a rebellion or civil unrest.