I agree that we have to have the toughest screening and vetting that we can have, but I don`t think a halt is necessary. What we have to do is put all of our resources through the Department of Homeland Security, through the State Department, through our intelligence agencies, and we have to have an increased vetting and screening .

It is highly likely that one of the two of them [ Donald Trump and Ted Cruz ] is going to be the nominee. This is a - look here, what is this - what this is really is a prescription for remaking the Republican Party.

He addressed a black lawyer as "boy". That`s why Jeff Sessions couldn`t get through Senate confirmation process under the old rules followed by Democrats and Republicans.

You have two people who I would classify as extremists. Donald Trump because of his behavior and Ted Cruz because of his views, leading the Republican Party.

How much trouble did the Democrats cause for a particular nominee on the way to actually being confirmed.And usually it`s very little.

I am confident that just as a America`s commitment to the transatlantic alliance has endured for seven decades, whether it`s been under a Democratic or Republican administration, that commitment will continue including our pledge and our treaty obligation to defend every ally.

Look, [Mitt] Romney comes from a religion founded by a criminal who was anti-American, pro-slavery, and a rapist. And he comes from that lineage and says, 'I respect this religion fully.'