Leaking of classified material is a concern.

In planning an attack, persons have various roles.

So without getting into the specifics, I can tell you that to the extent that investigation is a relatively important investigation and meaningful, the president would have been periodically briefed.

But since September 11, we have made every effort to try to work closely with state and local law enforcement.

Prior to the passage of the Patriot Act, it was very difficult - often impossible - for us to share information with the Central Intelligence Agency, with NSA, with the other intelligence agencies, and likewise, for them to share information with us.

I didn't know the organization, but the one thing you can say about the FBI, it's tremendously professional.

In the United States, it's the mandate of the FBI to gather information relating to terrorism, go out and collect it, to do the interviews, to do the investigative work.