The department said the justices should let stand an appeals court’s decision excluding about 100 sensitive documents seized at Mar-a-Lago from a special master’s review.
In both cases, former President Donald J. Trump is claiming a novel power to keep White House information from his time in office secret from the Justice Department.
The dueling moves by Judge Aileen M. Cannon and a special master she appointed reflected a larger struggle over who should control the rules of the review — and whom those rules would favor.