What we saw with both Donald Trump and Marco Rubio, that their response, whenever you point to anything in their record, is just to yell, "Liar, liar, liar," and to get very personal and to make direct character attacks. And my approach, from the very beginning of this President's campaign, starting a year ago in 2015, is that I will not respond in kind. I do not intend to insult any of the candidates.

We see a missile here, a bomb there - looks good on CNN. This is nonsense. This is not a strategy of a serious commander in chief.

If we have a biometric exit-entry system, we know on the day after six months has exceeded his visa.And with that exit- entry system, we can then send ICE, the law enforcement agents that exist, to go and get John and say, OK, you're here illegally now.

Congress needs to send a strong signal that direct communication with the leader of the free world is a privilege, particularly for a regime that has been as hostile as Iran has been towards America for more than three decades. President Rouhani needs to take these two simple steps to demonstrate good faith before any further discussions.

He [Donald Trump] said in the debate - he said, gosh, I'm being audited for two years. Then he said three years. Then he said maybe five years. Listen, if there's a problem in his taxes, the voters have a right to know, because come September, October, the general election, folks in the media are going to make a heyday about any problems in his taxes.

We are the change we're waiting for.

I don’t think I’m all that conservative.