I think it's a real debate how big NATO should be and whether or not it's more provocative than good. Whenever there's a war fought, our soldiers fight it and our dollars pay for it. And, really, our decisions need to be about our national security.

There are still people - the majority on the stage, they want to topple [Bashar] Assad. And then there will be chaos, and I think ISIS will then be in charge of Syria.

When I asked the president [Barack Obama], can you kill an American on American soil, it should have been an easy answer. It's an easy question. It should have been a resounding and unequivocal no. The president's response, he hasn't killed anyone yet.

How would you possibly sell 700 companies in a fire sale and hope to get what they were worth?It's just an unrealistic sort of standard they're trying to hold [Donald Trump] to.

I'm a Reagan conservative. Reagan did negotiate with the Soviets. But you have to negotiate from a position of strength.

On the Gang of Eight bill, there was no provisions really for extra scrutiny or safety for refugees. At the time the bill came up, two Iraqi refugees came to my home town, Bowling Green, Kentucky. Their fingerprints were on a bomb from Iraq. They were in the database, but we didn't pick them up.

The key to winning any general election in the USA is to excite your base and then expand your base - get independent voters and voters who haven't been voting for your party to come to your party.