From Ace of Spades:
The FBI launched a criminal probe against former Trump National Security Adviser Michael Flynn two years after the retired Army general roiled the bureau’s leadership by intervening on behalf of a decorated counterterrorism agent who accused now-Deputy FBI Director Andrew McCabe and other top officials of sexual discrimination, according to documents and interviews.
Flynn’s intervention on behalf of Supervisory Special Agent Robyn Gritz was highly unusual, and included a letter in 2014 on his official Pentagon stationary, a public interview in 2015 supporting Gritz’s case and an offer to testify on her behalf.
His offer put him as a hostile witness in a case against McCabe, who was soaring through the bureau’s leadership ranks.
The FBI sought to block Flynn’s support for the agent, asking a federal administrative law judge in May 2014 to keep Flynn and others from becoming a witness in her Equal Employment Opportunity Commission (EEOC) case, memos obtained by Circa show.
Two years later, the FBI opened its inquiry of Flynn.
The EEOC case, which is still pending, was serious enough to require McCabe to submit to a sworn statement to investigators, the documents show. The deputy director’s testimony provided some of the strongest evidence in the case of possible retaliation, because he admitted the FBI opened an internal investigation into Gritz’s personal conduct after learning the agent “had filed or intended to file” a sex discrimination complaint against her supervisors.
McCabe eventually became the bureau’s No. 2 executive and emerged as a central player in the FBI’s Russia election tampering investigation, putting him in a position to impact the criminal inquiry against Flynn.
Three FBI employees told Circa they personally witnessed McCabe make disparaging remarks about Flynn before and during the time the retired Army general emerged as a figure in the Russia case.AND THEN THERE'S THIS
McCabe's Revenge: Circa Suggests Flynn Investigation Was Launched As Pure Retaliation
See this Flashback from the Washington Post: the FBI reviewed Flynn's calls with the Russian ambassador back in December and found nothing illicit at all.