Robert Mueller

"There'll be differences of opinion in just about every intelligence analysis that you make."

"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."

"So there is a foreign intelligence purpose for every one of our FISA warrants."

"In order to be successful against each of these threats, we have to have a presence overseas, work closely not only with our counterparts in the law enforcement community, but also with the intelligence community."

"What we bring to the table is not only our 56 field offices in the United States and our number of resident agencies, but also we have 45 legal attaches overseas."

"We had to address information technology in the ways we had not before and give the agents the tools that they need to do their job more efficiently and more expeditiously."