The inquiry is a test for President Biden and Attorney General Merrick B. Garland, who both came into office promising to restore the Justice Department’s independence.
Federal prosecutors have been seeking documents and testimony about the fake electors scheme and the planning for the rally just before the storming of the Capitol.
New details from White House documents provided to the House panel investigating the Capitol assault show a 7-hour gap in records of calls made by the former president on the day of the riot.
A high-profile ruling about a subpoena from the House committee investigating the Jan. 6 attack turned on a lower standard of proof than a criminal trial.
Federal prosecutors and congressional investigators are documenting how the former president’s “Be there, will be wild!” post became a catalyst for militants before the Capitol assault.