According to the NYT:
"Much of the skirmishing involved a memo from a presidential briefing on Aug. 6, 2001 that some panel members suggested provided a strong signal of possible attacks in the United States. Ms. Rice acknowledged that she believed the memo was titled "Bin Laden Determined to Attack Inside the United States," but she said the memo contained "historical information based on old reporting" and that it did not warn of attacks in the United States.
Several panel members pressed Ms. Rice to have the whole memo declassified, and late today White House officials said they would release the memo tonight."
http://www.nytimes.com/2004/04/08/politics/08CND-PANE.html?hp