Mr. Bolton, a Trump aide turned critic, is part of a string of presidential foes to become prosecutorial targets. But his case gained momentum in the Biden administration.
The departures of Todd Gilbert and his deputy in the Western District of Virginia show the pressure being brought on prosecutors to pursue the president’s perceived foes.
Todd Gilbert, a Republican, was a longtime legislator in Virginia until he was sworn in as the top prosecutor for the state’s western district in July.
The Justice Department’s inspector general disclosed new details about the extent of misconduct by a top F.B.I. counterintelligence official, Charles McGonigal.