It is sobering to recognize that, more than four years after the failure of Bear Stearns began the acute phase of the financial crisis, so much remains to be done–in implementing reforms that have already been developed, in modifying or supplementing these reforms as needed, and in fashioning a reform program to address shadow banking concerns. For some time my concern has been that the momentum generated during the crisis will wane or be redirected to other issues before reforms have been completed. As you can tell from my remarks today, this remains a very real concern.
via FRB: Speech–Tarullo, Regulatory Reform since the Financial Crisis–May 2, 2012.