In the United States, the top five banks hold more than 50 percent of the total assets in the U.S. banking industry. Given increased bank consolidation and continued concerns over systemic risk to the global economy since the financial crisis, some have argued that big banks should be broken up to protect American taxpayers. But others disagree, arguing that markets can best dictate the appropriate size and structure of banks and that scale is critical in promoting efficient global credit markets and ensuring the competitiveness of U.S. banks. Simon Johnson, Harvey Rosenblum, Phillip Swagel, and Peter Wallison will debate these issues and related questions. We welcome you to join the distinguished panelists for a lively and timely debate.