President Barack Obama shakes hands as he arrives at a rally Tuesday, Sept. 28, 2010, on the University of Wisconsin campus in Madison, Wis. (AP Photo/Morry Gash)

Photo by: Morry Gash

President Barack Obama shakes hands as he arrives at a rally Tuesday, Sept. 28, 2010, on the University of Wisconsin campus in Madison, Wis. (AP Photo/Morry Gash)