In an interview with CNBC, Representative Barney Frank says he wants to push for prosecution of the people who caused the country's financial meltdown.

The Massachusetts Democrat says he has no specific targets in mind, but says the most significant thing lawmakers can do is make past bad practices illegal.

Frank also said that he was glad some U.S. banks had been returning government TARP money and said that was a sign that the banks were feeling more stabilized.