Republican presidential candidate, former Massachusetts Gov. Mitt Romney waves as he arrives for a campaign rally at the closed National Gypsum drywall factory in Lorain, Ohio, Thursday, April 19, 2012. (AP Photo/Jae C. Hong)

Photo by: Jae C. Hong

Republican presidential candidate, former Massachusetts Gov. Mitt Romney waves as he arrives for a campaign rally at the closed National Gypsum drywall factory in Lorain, Ohio, Thursday, April 19, 2012. (AP Photo/Jae C. Hong)