There are two things that matter in a criminal investigation of a subject.What did the person do, and when they did that thing, what were they thinking? When you look at the hundred-years-plus of the Justice Department investigation and prosecution of mishandling of classified information, those two questions are obviously present.

We did not find direct evidence that Secretary Clinton’s personal e-mail domain, in its various configurations since 2009, was successfully hacked. But, given the nature of the system and of the actors potentially involved, we assess that we would be unlikely to see such direct evidence.

WikiLeaks is a important focus of our attention.

It is a little bit difficult to talk about things that do involve classified matters in public. But I think the public needs to know that there are multiple oversight layers, including the FISA Court, congressional oversight, internal oversight within the FBI and intelligence community, that protects Americans from - under - their - their privacy rights while targeting terrorists and people who are trying to kill us.

What we do is we combine information collected from any lawful source in a single FBI database so we don't miss a dot when we're conducting investigations in the United States. What we make sure of, though, is nobody gets to see FISA information of any kind unless they've had the appropriate training and have the appropriate oversight.

I care a lot about privacy. I also care an awful lot about public safety. There continues to be a huge collision between those two things we care about.

Our investigation looked at whether there is evidence classified information was improperly stored or transmitted on that personal system, in violation of a federal statute making it a felony to mishandle classified information either intentionally or in a grossly negligent way, or a second statute making it a misdemeanor to knowingly remove classified information from appropriate systems or storage facilities.