Mitt Romney raised the issue of President Barack Obama's citizenship Friday by joking that "no one's ever asked to see my birth certificate."
"Big business is doing fine in many places," Romney said during a campaign fundraiser Thursday. "They get the loans they need, they can deal with all the regulation. They know how to find ways to get through the tax code, save money by putting various things in the places where there are low tax havens around the world for their businesses."