I really deplore the tone of his campaign and the inflammatory rhetoric that he is using to divide people. I don`t know that Donald Trump has any boundaries at all.

I'm going to try to get everybody who makes less than $125,000 in their family, which is the vast majority of people, to be able to go to a public college or university totally tuition-free. And if you make more than that, debt-free.

This has never happened to a major - to a nominee of a major party just a few days ago Donald Trump was endorsed by the official newspaper of the Ku Klux Klan. They wrote their endorsement under the slogan of his campaign, "make america great again." Do any of us have a place in Trump`s america?

We have to be cognizant of the fact that they've had foreign fighters coming to volunteer for them, foreign money, foreign weapons, so we have to make this the top priority.

Every presidential candidate for decades has released his tax returns, and I've released 33 years of my tax returns. The American people deserve to know about our taxes. And so Donald Trump is standing in the way of precedent that goes back on both sides of aisle Democrats and Republicans, and he clearly has something that he doesn't want us to see.

I probably described more times than I can remember how stressful it was advising the President [Barack Obama] about going after Bin Laden.

We have an authorization to use military force against terrorists. We passed it after 9/11.