Revelations about Lehman's, Just the Tip of the Iceberg?

Senator Chris Dodd (D-CT) is taking finance reform to the full Senate, with new authority for the Federal Reserve. But questions have arisen about what the Fed's done with authority it already has. Last week's report about the collapse of Lehman Brothers two years ago revealed practices that could have deceived investors about the firm's health. What did auditors from the Fed and Securities Exchange Commission know about that — and when did they know it?  Robert Teitelman is editor and chief of The Deal and The Deal Pipeline.