Mueller’s FBI also obstructed the 9/11 investigation in many other ways. For example, an FBI informant hosted and rented a room to two hijackers in 2000. Specifically, investigators for the Congressional Joint Inquiry discovered that an FBI informant had hosted and even rented a room to two hijackers in 2000 and that, when the Inquiry sought to interview the informant, the FBI refused outright, and then hid him in an unknown location. And see this.