The White House is blocking the 9/11 commission access to countless documents... from the Clinton administration. Kos:

Fact is, the Clinton administration got anti-al Qaida religion in Clinton's second term. They tried to get the incoming Bush administration to understand the importance of this work. But Bush and Rice were concerned about the "threats of tomorrow" -- defense against intercontinental balistic missile attack. Terrorism, despite the Clinton people's best efforts, barely registered on their screens on the morning of 9-11.