Well, our position, and our chairman has talked about this extensively, is that we had a lot of intelligence prior to 9/11. We knew that two al Qaeda operatives who ultimately participated in the 9/11 disaster were in the United States. We didn't find them.

But as I said to Dr. Rice following her testimony, and I think she appreciated it, we had our job to do and we did it best we could, trying to get answers to the important questions that the 9/11 Commission must answer.

Without the tape-recorded evidence demonstrating irrefutably, in Nixon's own voice, his knowledge of and active involvement in obstruction of justice, it is likely that Nixon would have escaped impeachment and removal from office.

We've had public hearings. We've had interim reports, which our statute has encouraged us to provide to the public. We have brought the public along with us, trying to make as much available as possible over time.