You can assert a fifth amendment privilege and not testify. But if you go in and swear to tell the truth, then you better do it. Otherwise, if a prosecutor finds that you have testified in a way that is factually incorrect and you had reason to know that it was factually incorrect, then you're guilty of perjury.

Were there contacts over time between Iraq and al-Qaeda? Yes, there were efforts made to communicate. We found no evidence of collaboration in any effort to mount any kind of operation against the United States' interests.

No connection between Iraq and the 9/11 catastrophe.

Well, changes have been made. The question is whether we've done enough by way of change.

You can assert a fifth amendment privilege and not testify. But if you go in and swear to tell the truth, then you better do it. Otherwise, if a prosecutor finds that you have testified in a way that is factually incorrect and you had reason to know that it was factually incorrect, then you're guilty of perjury.

With respect to the FBI, they had problems communicating in a vertical way, within the FBI itself, so that information of importance could get pushed up to those who were decision-makers.