Someone like Brennan would still have his access to classified material at any level, don’t you think? This was/is a crime scene with Comer, Clapper, Lynch, Clinton, Podesta brothers...etc. I believe the corruption is so deep it may never be cleaned up. I image in your day, the FBI was as it should have been.
Read up on J. Edgar Hoover. The FBI has a history of being misused.