Back and Forth ~ Gov. Romney and Gov. Perry are continuing to go at each other on Social Security and health care.  What will be the strategy of the two top contenders at tonight's GOP debate?  To opine and preview the debate, Brian will be joined by Gov. Jennifer Granholm (D-Michigan) and her husband Dan Mulhew, co-author of "A Governor's Story: The Fight for Jobs and America's Economic Future", Rep. Blake Farenthold (R-TX), Lt. Col. Ralph Peters, author of "Lines of Fire", and FOX's Jonathan Wachtel and Kimberly Guilfoyle!