It's a little-known story about the financial crisis. During the frenzied events of the fall, Henry Paulson rewrote a piece of the tax code to expedite mergers. The quiet alteration amounts to an estimated $140 billion windfall for big banks. Some critics say Paulson's move was too autocratic, others argue that it was much more than thatâ??that it was downright illegal. Will Tim Geithner and the Democrats attempt to correct the wrong?