Mueller has been investigating, among other things, whether Trump obstructed justice in his interactions with top law enforcement officials, including McCabe and his former boss, fired FBI director James B. Comey. Comey also kept memos documenting his interactions with Trump, which Mueller already was reviewing. The memos could help bolster McCabe’s credibility, insulating him from allegations that he misstated or misremembered his interactions with Trump. It was not immediately clear which interactions with Trump the memos detailed or how specific they were. Trump fired Comey in May, and McCabe briefly took over as the FBI’s acting director.

Source: Washington Post March 17, 2018 18:26 UTC