The near-term attacks ... will either rival or exceed the 9/11 attacks... And it's pretty clear that the nation's capital and New York city would be on any list.

We must also reject the false choice of liberty versus security. We can and must have both.

Trust is a great force multiplier.

While I think it's very important that Marco Rubio and Senator [Ted] Cruz have contributed as senators... there's no doubt in my mind that being a governor is far, far better preparation for the ultimate responsibility as president of the United States.

Remember back then we thought about al Qaeda in Afghanistan and Pakistan and a few other places? well, we've seen al Qaeda metastasize. It is now a global scourge. And you have the ascendancy of ISIL. The combination of those two groups -- their appeal to the lone wolfs and we see them acting in Belgium and in France and in Canada and the United States so the threat factors and the nature of the threats are far more complicated and far more serious today than on September 12, 2001.

Very interested in any technology that can help create a safer and more secure America.

I think Senator Rubio is a very talented young man. But you can well imagine that I am kind of partial to governors.