As this issue goes to press, congressional deliberations on the mammoth financial reform bill have entered the trench-warfare stage, over a seemingly obscure question: where to put the new Consumer Financial Protection Agency (CFPA), which will centralize the writing and (to some degree) enforcement of federal financial regulations on such things as mortgages, savings accounts, and consumer debt. Should it be an independent agency, like the Securities and Exchange Commission, or a subunit of the Treasury Department or the Federal Reserve?