Joint Congressional Inquiry into the Terrorist Attacks of September 11, 2001

Joint Congressional Inquiry into the Terrorist Attacks of September 11, 2001

The Joint Congressional Inquiry into the Terrorist Attacks of September 11, 2001 was a bicameral, bipartisan investigation conducted by the Senate and the House to examine the circumstances surrounding the September 11, 2001 attacks and the performance of United States intelligence agencies. Convened in October 2002, the Inquiry produced classified and unclassified reports that informed later public work by the 9/11 Commission and prompted oversight of the Aviation and Transportation Security Act and intelligence reforms.

Background and Establishment

Members of Congress launched the Inquiry after public scrutiny of al-Qaeda operations, failures of FAA procedures, and indications of missed warnings involving Osama bin Laden, Khalid Sheikh Mohammed, and other operatives linked to the Hamburg cell and al-Qaeda in the Arabian Peninsula. Political momentum followed critiques from George W. Bush, commentary in The New York Times and The Washington Post, and pressure from families organized through groups like September 11th Families for Peaceful Tomorrows and families of victims. Chairs Bob Graham and Porter Goss coordinated staff from the Senate Select Committee on Intelligence and the House Permanent Select Committee on Intelligence, working alongside legal counsel drawn from offices of Arlen Specter and Nancy Pelosi to subpoena material from the CIA, NSA, and Department of Defense components including USNORTHCOM and DIA.

Investigative Process and Hearings

The Inquiry assembled classified intelligence, FBI investigative files, INS records, and airline manifests from carriers such as American Airlines and United Airlines, and sought testimony from officials including Colin Powell, Condoleezza Rice, George Tenet, John Ashcroft, and Tom Ridge. Staff interviewed witnesses from Khalid al-Mihdhar and Nawaf al-Hazmi’s known associates, consulted analysts from the NCTC, and reviewed flight data recorder summaries from American Airlines Flight 11, United Airlines Flight 175, American Airlines Flight 77, and United Airlines Flight 93. The Inquiry issued subpoenas to George Tenet and obtained cooperation from the Director of Central Intelligence office notwithstanding disputes over classification led by Edward Snowden-era debates later, and navigated separation issues involving Presidential Records Act considerations for Andrew Card and Ari Fleischer. Hearings included closed-door briefings with John McCain, Jane Harman, and intelligence staffers who had tracked Zacarias Moussaoui. The Inquiry coordinated with the Department of Justice and its Office of Inspector General to resolve evidentiary disputes and public testimony scheduling.

Key Findings and Conclusions

The Inquiry concluded that failures of intelligence sharing among the FBI, CIA, INS, NSA, and DIA contributed to missed opportunities to disrupt the September 11 attacks. It documented that al-Qaeda operatives exploited immigration processes and used flight schools in Florida and Arizona to prepare attacks, and found that operational security by Hijackers such as Mohamed Atta and Marwan al-Shehhi masked plotting. The report highlighted that Bush administration policies and NSC procedures affected information flow, pointing to communication gaps involving Condoleezza Rice and George Tenet. The Inquiry determined that some warnings, including able danger-related intelligence and intercepts identifying Khalid al-Mihdhar and Nawaf al-Hazmi, were not adequately shared and that procedural reforms were necessary in agencies like the FBI and CIA to prevent compartmentalization of counterterrorism data.

Criticisms and Controversies

Critics argued the Inquiry's access to classified material was constrained by the CIA and that significant portions of the report remained redacted, provoking disputes with advocates such as families of victims and commentators in The New York Times and The Washington Post. Allegations surfaced about politicization involving members from the Republican Party and the Democratic Party, and debates ensued over timing relative to the later 9/11 Commission timeline. Intelligence community officials, including George Tenet and Ari Fleischer, contested some characterizations, and independent researchers like Lawrence Wright and Peter Lance published alternative accounts. Legal challenges touched on executive privilege claims linked to President George W. Bush and classified-source protections asserted by the CIA, prompting Congressional disputes over declassification policies and oversight subpoena enforcement.

Impact and Legislative Outcomes

Findings from the Inquiry informed legislative and organizational changes, influencing the creation of the Director of National Intelligence post and the restructuring that culminated in the Intelligence Reform and Terrorism Prevention Act of 2004. The Inquiry’s emphasis on aviation security fed into the TSA expansion and the Aviation and Transportation Security Act, and its exposure of intelligence failures spurred reforms in the FBI’s counterterrorism division and the establishment of the NCTC. In Congress, sponsors such as Chuck Schumer and Peter Hoekstra cited Inquiry material when crafting oversight legislation, and the Inquiry’s public and classified reports remain referenced in scholarly works by John Mueller and Walter Laqueur and policy analyses from think tanks such as the Council on Foreign Relations and Brookings Institution.

Category:United States congressional investigations