It is not clear what evidence the authorities have that John Bolton mishandled classified information, but President Trump’s efforts to punish rivals immediately stoked questions about the investigation.

© Jason Andrew for The New York Times

The plan appears to be part of a broader effort to shift the agency’s focus from tracking national security threats to fighting crime.

© Eric Lee for The New York Times

Federal agents are assisting the local police, but a surge in National Guard troops hasn’t hit the streets.

© Kent Nishimura for The New York Times