Republican presidential candidate, former Massachusetts Gov. Mitt Romney, autographs a baseball as he greets the crowd after a Tea Party town hall event in Milford, Mich., Thursday, Feb. 23, 2012. (AP Photo/Carlos Osorio)

Photo by: Carlos Osorio

Republican presidential candidate, former Massachusetts Gov. Mitt Romney, autographs a baseball as he greets the crowd after a Tea Party town hall event in Milford, Mich., Thursday, Feb. 23, 2012. (AP Photo/Carlos Osorio)