June 18, 2002: FBI Director Mueller Maintains 9/11 Attacks Could Not Have Been Prevented

FBI Director Robert Mueller testifies before the 9/11 Congressional Inquiry. His testimony will be made public in September 2002. [Associated Press, 9/26/2002]
Mueller Says Hijackers Operated Alone – Mueller claims that with the possible exception of Zacarias Moussaoui, “[t]o this day we have found no one in the United States except the actual hijackers who knew of the [9/11] plot and we have found nothing they did while in the United States that triggered a specific response about them.” He also claims, “As far as we know, they contacted no known terrorist sympathizers in the United States.” [US Congress, 9/26/2002]
Mueller Contradicted by 9/11 Inquiry – The 9/11 Congressional Inquiry will conclude near the end of 2002 that some hijackers had contact inside the US with individuals known to the FBI, and the hijackers “were not as isolated during their time in the United States as has been previously suggested.” [Los Angeles Times, 12/12/2002]
Mueller Contradicted by FBI Report – Also, a classified FBI report from November 2001 asserted that the hijackers had a “web of contacts” in the US and abroad who “were known from [Osama bin Laden]-related activities or training” (see November 2001). [Sperry, 2005, pp. 67-68]
Muller: ‘No Slip-Ups’ – Mueller also claims: “While here, the hijackers effectively operated without suspicion, triggering nothing that alerted law enforcement and doing nothing that exposed them to domestic coverage.… There were no slip-ups. Discipline never broke down. They gave no hint to those around them what they were about.” [US Congress, 9/26/2002]