[Donald Trump] has really started his political activity based on this racist lie that our first black president was not an American citizen. There was absolutely no evidence for it, but he persisted, he persisted year after year, because some of his supporters, people that he was trying to bring into his fold, apparently believed it or wanted to believe it.

Every moment wasted looking back, keeps us from moving forward.

I would say that folks who have looked at this issue for a long time, whether it's Elizabeth Warren or many other economists, will tell you that right now, yes, we do need a 21st century Glass-Steagall legislation.

Lots of people commit crimes and don't get arrested. That's not the measure. But if you're going to be the president of the United States, we're reasonably going to put you under a microscope. And Donald Trump's tax behavior is absolutely important to understanding, is he qualified, is he morally fit, is he capable, is he trustworthy to have everything from the powers of federal law enforcement to the nuclear codes?

Our largest companies should not be able to get away with paying hardly anything at all. It is insulting when they engage in these games like moving their headquarters over to a foreign country, on paper, not in reality, just to take advantage of lower tax breaks.

When I was in the Senate, I had a number of trade deals that came before me, and I held them all to the same test. Will they create jobs in America? Will they raise incomes in America? And are they good for our national security? Some of them I voted for.

Donald Trump lives in an alternative reality.