Fifteen years ago, I gave a speech entitled “Rethinking Financial Regulation,” which summarized the major threats facing our financial system. My suggestion then was to take steps to reduce interdependencies among large institutions and to limit them to relatively safe activities if they chose to provide essential banking and payments services and be protected by the federal safety net. I also argued that safety net protection and public assistance should not be extended to large organizations extensively engaged in nontraditional and high-risk activities. A final point of those remarks was that central banks must pursue policies that preserve financial stability. I am going to repeat those suggestions today, and as often as the opportunity allows. History is on my side.

Today, I am convinced that the existence of too big to fail financial institutions poses the greatest risk to the U.S. economy. The incentives for risk-taking have not changed post-crisis and the regulatory factors that helped create the crisis remain in place. We must make the largest institutions more manageable, more competitive, and more accountable. We must break up the largest banks, and could do so by expanding the Volcker Rule and significantly narrowing the scope of institutions that are now more powerful and more of a threat to our capitalistic system than prior to the crisis.