Taking financial risks is an essential part of what banks do, but there's no clear sense of what constitutes responsible risk. Taking legal risks seems to have become part of what banks do as well. Since the financial crisis, Congress has passed copious amounts of legislation aimed at curbing banks' risky behavior. Lawsuits against large banks have cost them billions. Yet bad behavior continues to plague the industry. Why isn't there more change?

In Better Bankers, Better Banks, Claire A. Hill and Richard W. Painter look back at the history of banking and show how the current...