Today, a federal judge appointed by Donald Trump is signaling that she is prepared to appoint a special master to review materials seized from Mar-a-Lago by federal agents, injecting new uncertainties in the criminal investigation of the former president. The Justice Department said Monday that FBI agents have already finished their review of possibly privileged documents seized in the Aug. 8 search. U.S. District Judge Aileen M. Cannon plans to hold a hearing this week on Trump’s motion for a special master.