A conversation with Sheila Bair, who recently stepped down as chair of the Federal Deposit Insurance Corporation. The agency watches over banks and insures deposits. Bair played a key role in the Obama administration's response to the financial crisis that began in earnest in 2008. She has been credited with sounding the alarm on sub-prime mortgages. She has clashed with other regulators - and the White House - and remains opposed to bank bailouts. Reflecting on the tumultuous period she served, she said the FDIC's job is "to protect bank customers, not banks."