Lousy Bank Earnings Sets Up Decisive Attack on Dodd-Frank

NEW YORK (TheStreet) -- There are a number of reasons why big banks like J.P. Morgan , Citigroup and Bank of America have been reporting weaker-than-expected earnings for the fourth quarter. But one common theme seems to have emerged: unlike the big money managers like Blackstone and BlackRock , banks are no longer allowed to trade in financial markets for themselves -- a practice known as proprietary trading. And that's taking a toll on their bottom line. Must Read: 10 Stocks Billionaire Davi...