Transcript for Bernie Sanders Discusses North Korea, Wall Street and More

sanders, senator Bernie sanders here now. Democratic presidential candidate. I want to get to that argument from Hillary Clinton in a second. First breaking news overnight from North Korea. Another nuclear test, perhaps a hydrogen bomb, if you were in the oval office what would you do about it? First of all we'll have to lean on China. China is North Korea's closest ally. They'll have to push North Korea to start adhering to international agreements. How do we lean on China? China, we have a relationship. China is equally concerned about what North Korea is doing. North Korea is a paranoid isolated nation. They are -- when you have a hydrogen bomb, if that's true, you are a threat to China, as well. How about this argument from Hillary Clinton clearly believes that she can make the pitch she's far more electable than you are. I would suggest secretary Clinton look at the last quinnipiac poll which has me leading trump by a significantly higher margin than she does and that's true of other poll, as well, look, two things, number one I believe that our campaign is generating the kind of grassroots excitement that will result in a high voter turnout. Democrats need a high voter turnout to win. I think we can do that. Second of all, for a variety of reasons I think we can do better against trump or other republicans than can secretary Clinton. What's the number one reason? The number one reason I think is that the issues that we are talking about, the disappearing middle class, massive levels of income and wealth inequality and the fact that Wall Street's greed has had a huge impact on the lives of millions of people, people want leadership now to stand up to the big money interests, protect working people, that's what I've done my Wohl life. Secretary Clinton says her plans to take on Wall Street are tougher than yours. Actually they are not. We're talking about breaking up the large financial institutions, so that the middle class this country will not again have to bail them out. We're talking about the reality that when you have a handful of banks, half a dozen banks that have assets EE give will interto 60% of the gdp of America. That's dangerous to our economy and political life. You have to break them up and re-establish Stegall legislation. A lot of experts said that's not fundamentally at the core of what the problem is but I -- I disagree with that. So many were created by the banks that weren't under glass-steagall. They were funded by the large financial institutions. You've also said that you're upset that the leaders of those financial institutions, some did not go to jail. Can you point to any one that there was evidence they committed a crime. Since 2009, large financial institutions have paid over $200 billion in fines. Now, if you're paying $200 billion in fines for illegal activity and reaching settlements with the government, you tell me if there was not culpability. Can you name an individual. Give you one example, wachovia which was later bought by Wells Fargo was convicted of laundering Mexican drug money. What do you think? You think somebody might be guilty? $200 billion in fine. Nobody prosecuted. I think what you have is a situation where banks are not only too big to fail, bankers are too big to jail. 3 1/2 weeks away from Iowa. Do you think you'll win. We got a great shot. There's a lot of enthusiasm. Senator sanders, thanks for joining us this morning. We appreciate the candidates continuing to come to our studios.

This transcript has been automatically generated and may not be 100% accurate.