As the Obama admin's commitment to financial sector regulatory reform seem lukewarm at best I would implore the liberal senators on the Finance Committee to hold up Bernanke's confirmation for a second term as Fed Chairman until meaningful (no 'too big to fail', position limits on all commodities derivatives, all derivatives traded on open exchanges, etc.) financial regulatory reform is signed by the President.
This is one of the few times senators who REALLY want to rein in the run amok risk-takers will have some real political leverage. Summers and Geithner certainly don't seem inclined to do much...