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.

I have heard so many stories of contractors, and I've met some, too, who worked for Donald Trump, produced the goods and services and never got paid for what they were owed.

[Donald Trump] attitude towards our longest defense alliance and NATO, that we should somehow walk away from it.

I can only say that I'm certainly relieved that my late father never did business with Donald Trump. He provided a good middle-class life for us, but the people he worked for, he expected the bargain to be kept on both sides.

Our responsibility as citizens is to keep doing our part.

In the 1980s, I was working to reform the schools in Arkansas. Donald Trump was borrowing $14 million from his father to start his businesses. In the 1990s, I went to Beijing and I said women's rights are human rights. He insulted a former Miss Universe, Alicia Machado, called her an eating machine.

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?