"Comey kept detailed contemporaneous memos of the one-on-one conversations he had with Trump, which a friend, Columbia Law School professor Daniel Richman, reportedly has turned over to Mueller’s office already. . .He also testified that he briefed a number of high-level FBI staff about the contents of the memos so that they could corroborate his accounts. Those individuals, who could serve as fact witnesses for Mueller, include Comey’s chief of staff, Jim Rybecki; then-FBI deputy director Andrew McCabe; general counsel James A. Baker’ and McCabe’s chief counsel. According to Comey, some of those debriefing conversations also included David Bowdich, the FBI’s associate deputy director, and Carl Ghattas, the executive assistant director for the national security branch.":
All The President’s Witnesses For The Prosecution