Republicans are taking the possibility of [Donald] Trump as nominee seriously enough that the committee that oversees next year's Senate races laid out a confidential seven-page blueprint for candidates on how to run with Trump at the top of the ticket.

Because people were attracted to him because he was not elected to an office. He was not a politician. And like you said before, he was a person that people say "Wow! He has the idea!" But the more and more you listen to Donald Trump, the more you have the sense that he is not the person that's going to run the country. And I have strong views.

[Ted] Cruz is not at all popular in the Senate. Republicans say he may be too disliked to be a nominee. And there is a real concern about that. I think the one way to go after Trump maybe is go after him as a closet Democrat. That he has supported Democrats in the past.

I had actually, after the Paris attacks in this country, we all patted ourselves on the back and said, "Well, we have a much more assimilated Muslim population here than they do in Europe."

If you want to beat Donald Trump - then you need to be the candidate that is not the establishment in your thinking, in the way you're presenting yourself.

You know, a meme is now circulating that's called the Ostrich Brigade. And it's used to describe all those people who are burying their heads in the sand. I call it the three D strategy. It's denial, deflection, and a demonization of those of us who want to speak honestly about these issues of extremism.

I hate this idea that we, as Americans, are going to say we're going to have a sense at the border, someplace else, that - to figure out whether or not Muslims can come to the United States.