In our counterterrorism cases and our counterintelligence cases, we can issue all kinds of - of layers of approval in the FBI, a national security letter to find out the subscriber to a particular telephone number and to find out what numbers that telephone number was in contact with. Not the content of those communications, but just the connection.

Our process inside the United States government has gotten much better at making sure we touch all possible source of information about a refugee. The interview process has gotten more robust, so we've gotten our act together in that respect. The challenge remains, especially with respect to folks coming from Syria, we're unlikely to have anything in our holdings. That is, with people coming from Iraq, the United States government was there for a very long period of time. We had biometrics, we had source information. We're unlikely to have that kind of picture about someone coming from Syria.

Secretary Hillary Clinton used several different servers and administrators of those servers during her four years at the State Department. She also used numerous mobile devices to send and to read email on that personal domain.

We all love privacy. We all care about public safety. And none of - at least people that I hang around with, none of us want back doors. We don't want access to devices built-in in some way.

The Obama administration was not in a position where they were seeking legislation. I don't know yet how President Trump intends to approach this. I know he spoke about it during the campaign. I know he cares about it, but it's premature for me to say.

Really bad people around the world, because of the genius of American innovation, use our products and infrastructure for their emails, for their communications.

Sometimes the FBI is assigned to do background checks on people who are coming into government in the executive office of the president. Other times, not. A lot of times there are people who are arriving with clearances that already exist.