Testifying before the US Senate Finance Committee on his re-appointment, Ben Bernanke volunteered that the Fed had been “slow” in protecting consumers from high-risk mortgages during the housing bubble and that it should have forced banks to hold more capital for all the risks they were taking on. “In the area where we had responsibility, the bank holding companies, we should have done more.” he told lawmakers. The hearing provided new evidence of doubt among lawmakers about the Federal Reserve’s role as the nation’s guardian of the financial system. “In the face of rising home prices and risky mortgage underwriting, the Fed failed to act,” said Senator Richard Shelby of Alabama, the senior Republican on the banking committee. “Many of the Fed’s responses, in my view, greatly amplified the problem of moral hazard stemming from ‘too big to fail’ treatment of large financial institutions and activities.” Accordingly, Senator Dodd proposed that the Fed’s powers as a bank regulator ought to be transferred to a new consolidated agency. Even though Bernanke admitted that the Fed made mistakes as a regulator of the bank holding companies, he and other top Fed officials adamantly opposed Dodd's proposal, arguing that the Fed has unique expertise nonetheless and that the Fed's ability to preserve financial stability depends on having the detailed information that only a regulator has about the inner workings of major institutions.
The full essay is at "The Federal Reserve Bank."