How do these people get into the FBI?
Passing a loyalty test.
Since Hoover died, they have never elevated anyone from within the agency to lead it. That plus the headquarters has been staffed primarily from the outside. I know several retired agents who are very conservative, are Trump supporters, and they are furious with Comey and with the “get Trump” conspiracy. I’ve know them for years - home towners. They point out how poor appointed leadership over the years has opened the FBI to political pressures that probably not happened if an FBI trained assistant director had taken over. They mention several who would been good directors but were never considered.