Bernie Sanders on why he wants to break up Wall Street banks

Throughout his campaign, Senator Bernie Sanders has made the breakup of big financial institutions a central theme. But in an interview on the NewsHour, Judy Woodruff pressed Sanders on arguments from experts who say federal regulators already have the power to break them up and who say the system is safer. Sanders responded by saying shrinking too-big-to-fail banks is not just a matter of reducing risk to the country. Sanders says six of the largest banks have assets totaling 58% of U.S. GDP and it's time to create a financial system where a few banks would not have so much power.