The Senate Select Committee on Intelligence and the House Permanent Select Committee on Intelligence conducted an inquiry into the activities of the U.S. Intelligence Community in connection with the September 11, 2001 terrorist attacks and made recommendations to address weaknesses in the system.
CONCLUSION – FACTUAL FINDINGS
In short, for a variety of reasons, the Intelligence Community failed to capitalize on both the individual and collective significance of available information that appears relevant to the events of September 11. As a result, the Community missed opportunities to disrupt the September 11th plot by denying entry to or detaining would-be hijackers; to at least try to unravel the plot through surveillance and other investigative work within the United States; and, finally, to generate a heightened state of alert and thus harden the homeland against attack. No one will ever know what might have happened had more connections been drawn between these disparate pieces of information. We will never definitively know to what extent the Community would have been able and willing to exploit fully all the opportunities that may have emerged. The important point is that the Intelligence Community, for a variety of reasons, did not bring together and fully appreciate a range of information that could have greatly enhanced its chances of uncovering and preventing Usama Bin Ladin's plan to attack these United States on September 11, 2001.
Our review of the events surrounding September 11 has revealed a number of systemic weaknesses that hindered the Intelligence Community's counterterrorism efforts before September 11. If not addressed, these weaknesses will continue to undercut U.S. counterterrorist efforts. In order to minimize the possibility of attacks like September 11 in the future, effective solutions to those problems need to be developed and fully implemented as soon as possible.