WASHINGTON -- Donald Trump and Hillary Clinton adjusted their presidential politicking Sunday, first offering prayers and support to the victims of the worst mass shooting in U.S. history. But they both infused their sympathy with statements that favor their presidential aspirations, and the presidential race rolled on. The presumptive candidates made statements hours after a gunman wielding an assault-type rifle and a handgun opened fire inside a crowded gay nightclub early Sunday, killing at least 50 people before dying in a gunfight with SWAT officers, police said.