The triad is our ability of the United States to conduct nuclear attacks using airplanes, using missiles launched from silos or from the ground, and also from our nuclear subs' ability to attack. And it's important - all three of them are critical. It gives us the ability at deterrence.

Well, when people talk about interrogating terrorists, they're acting like this is some sort of law enforcement function. Law enforcement is about gathering evidence to take someone to trial, and convict them. Anti-terrorism is about finding out information to prevent a future attack so the same tactics do not apply.

It's impossible to walk a block in Miami, in Los Angeles, San Antonio without running into someone who is being deeply impacted by a broken legal immigration system.

Here we will solve with laws and dollars, problems that too many people around the world still must solve with violence and civil war.

ISIS is winning the propaganda war. They are recruiting people, including Americans, to join them, with the promise that they are joining this great apocalyptic movement that is going to defeat the West.

Legal immigration is good for America, if it's controlled and structured via the legal process, of course. But the problem is the system we have in place right now is broken. For example, it is completely family based which means that it's based not on what you can do or what talent you have or what merit you bring or what job you could fill, but rather on whether you know someone who already lives here.

I don't agree with the notion that some are putting out there, including scientists, that somehow there are actions we can take today that would actually have an impact on what's happening in our climate.