.
Louie Freeh
Or Louis Freeh
The fool who was FIB director during Waco, the Ruby Ridge investigation, OKC bombing, Khobar Towers, and many other cases, and ultimately was forced to resign after Robert Hanssen was caught spying. FIB dropped the ball on the 9/11 plot during the transition from Freeh to Mueller.
Definitely the weakest leader in the bureau’s history, before being surpassed by Fay Wray.