Well, this went sliding by. Obama's stimulus plan repeals tax breaks given to banks for mergers and acquisitions earlier this year. The repeal only affects future mergers and acquisitions.

To address the financial industry meltdown, the Treasury Department last fall issued a new tax rule to make it more attractive for healthy banks to buy troubled ones hit hard by the mortgage crisis. It allowed healthy banks to avoid billions of dollars in taxes by offsetting their profits with the losses of the banks they acquire.

Before, the merged bank could write off only a limited amount of the losses. Removing much of the restrictions enabled the acquiring banks to make huge reductions in their tax liabilities.