GUEST COMMENTARY: Obama's tax deal will hurt Social Security

We enter 2011 with a few more dollars in our paychecks. For about 98 percent of Americans, the extension of Bush tax cuts and the new payroll tax holiday will make it easier for us to afford a gallon, rather than a quart, of milk for our families each month and to fill our tanks almost as high as we did with lower gas prices last year. (We ought to be consuming less gas and driving electric cars, but I'll leave that for another commentary.)