What Matt Taibbi says:

f J.P. Morgan Chase wants to act like a crazed cowboy hedge fund and make wild exacta bets on the derivatives market, they should be welcome to do so. But they shouldn’t get to do it with cheap cash from the Fed’s discount window, and they shouldn’t get to do it with money from the federally-insured bank accounts of teachers, firemen and other such real people. It’s a simple concept: you either get to be a bank, or you get to be a casino. But you can’t be both. If we don’t have rules to enforce that concept, we ought to get some.