Photo by: Jae C. Hong

FILE - In this April 27, 2012, file photo Republican presidential candidate, former Massachusetts Gov. Mitt Romney waves after speaking at Otterbein University in Westerville, Ohio. “I'm absolutely convinced that this nation is the greatest nation on earth, and it is so because of the American people, a people who stand united when called upon by leaders to be united,” Romney said, offering unusually measured remarks, even for the former businessman's standards, mentioning Obama by name only a handful of times. “I will try and unite the American people, not divide us.” (AP Photo/Jae C. Hong, File)