If you're running to be president of the United States, you can't just tell people you're going to make America great again. I think you need to begin to explain exactly how you're going to do it policy-wise. We're not going to win a general election with a candidate that refuses to detail policy.

We are a people that have always celebrated other people's success so long as we always had the opportunity to meet that success ourselves. That is the American nature. That is the American character. That is one of the things that makes us different from the rest of the world. And I'm afraid we could lose that or are on the verge of losing that.

I think what we need to do is understand our number one obligation is to act in the national interest of the United States of America. I believe it is in our national interest to see democracy take hold on the island of Cuba. And so we examine our foreign policy, including all the changes that President Obama made, in that lens and through that lens.

Our status as a land of equal opportunity has made us a rich and powerful nation, but it has also transformed lives. It has given people like me the chance to grow up knowing that no dream was too big and no goal out of reach.

Here's the bigger problem with all this, we're not interrogating anybody right now. Guantanamo's being emptied by this president. We should be putting people into Guantanamo, not emptying it out, and we shouldn't be releasing these killers who are rejoining the battlefield against the United States.

National security, the government is in charge of that. And you better have a president that understands the threats we [the state] face and what we have to do about it and if you can't articulate that as a candidate, you cannot be commander-in-chief.

Donald Trump has the benefit of the fact that he's dominated media coverage, I mean, literally dominated media coverage because of the outrageous things he says and so forth. That's going to end here. There's going to be real fight now for the heart and soul of the Republican Party and the conservative movement. And it is not - I will do whatever it takes to prevent it from being taken over by a con artist.