Senator [Ted] Cruz is not qualified to be president because he doesn't have the right temperament and acted like a maniac when he arrived in the Senate.

I'm a big free trader. But it has to be fair.

Mexico continues to make billions on not only our bad trade deals but also relies heavily on the billions of dollars in remittances sent from illegal immigrants in the United States.

You have to remain cool under fire and let criticism roll off you. Good leaders handle conflict easily and bad ones are eaten up by it.

Now I know a lot about NATO - NATO is obsolete, and the reason it's obsolete is because of the fact they don't focus on terrorism.

What's the point of having great knowledge and keeping them all to yourself?

I'm a businessperson. I did really well. But I have common sense. And I said, well, I'll tell you. I haven't given lots of thought to NATO. But two things.Number one, the 28 countries of NATO, many of them aren't paying their fair share. Number two - and that bothers me, because we should be asking - we're defending them, and they should at least be paying us what they're supposed to be paying by treaty and contract.