It is Bush's fualt. This is what Bush did:
Backed off Clinton administration's anti-terrorism efforts.
Shelved the Hart-Rudman report.
Appointed new anti-terrorism task force under Dick Cheney. Group did not even meet before 9/11.
Called for cuts in anti-terrorism efforts by the Department of Defense.
Gave no priority to anti-terrorism efforts by Justice Department.
Ignored warnings from Sandy Berger, Louis Freeh, George Tennant, Paul Bremer, and Richard Clarke about the urgency of terrorist threats.
Halted Predator drone tracking of Osama bin Laden.
Did nothing in wake of August 6 C.I.A. report to president saying Al Qaeda attack by hijack of an airliner almost certain.
Bush - knowing about the terrorists' plans to attack in America, warned that terrorists were in flight schools in the US - took a four week vacation.
Bush WAS the commander in Chief at the time of 9-11!!