@mysteryman,
It is part of the record, mm, and they have since tried to spin their way out of it, but there is reasonable suspicion also that these events might also have had something to do with Sandy Berger stealing national security documents before the 9/11 committee proceedings, for which he was never adequately grilled over and punished for. Plainly, the 9/11 Commission dropped the ball, but no surprise given the Democrats on that committee, including Jamie Gorlick, famous for the "Wall," which is also suspected of not preventing 9/11 as we could have if agencies had been sharing intelligence.