JP Morgan Chase survived the financial crisis with its reputation in tact as the best managed bank on Wall Street. CEO Jamie Dimon has been a voice against increased regulation. Now the loss of $2 billion on risky trading has tarnished the bank and raised questions about Dimon himself. Should JP Morgan-Chase and others be reigned in before taxpayers get left on the hook? We hear from Elizabeth Warren, who chaired the Congressional Oversight Panel that oversaw TARP and is now a Democratic candidate for the US Senate in Massachusetts, and from Romney campaign advisor Vin Weber.