President Trump said on Thursday that he had called off the deployment in San Francisco. Two federal officials said on Friday that the action applied across the region.

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Coast Guard police fired rounds at a moving van that accelerated toward the base in reverse and did not follow commands to stop, the authorities say.

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President Trump said he had halted a planned federal deployment of immigration agents to the city. It was not clear what that meant for the rest of the Bay Area.

© Gabriela Bhaskar/The New York Times

About 200 people stood in an intersection outside the Coast Guard base in Alameda, Calif., where federal agents were said to be arriving to prepare for an immigration enforcement operation.

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