Senators are renewing calls for the declassification of a CIA report documenting the agency's mistakes in preventing the 2001 attacks. The Senate Intelligence Committee and the CIA may be headed for a new confrontation over an old issue: why an internal report documenting the agency's failures in the run up to the September 11 terror attacks is still being withheld from the public. The report, prepared by the CIA's inspector general, is the only major 9/11 government review that has still not been made publicly available. While Bush administration officials are hardly eager for a public rehash of the 9/11 intelligence failures, the issue is an especially sensitive one at CIA headquarters. The report provides the CIA's own internal account of what some believe was the most spectacular of the pre-9/11 failures: the agency's failure to alert the FBI and other U.S. government agencies to information showing that two of the hijackers had entered the United States as early as January 2000.