..."Romney cree en nosotros," U.S. Rep.Mario Diaz-Balart, R-Fla., tells viewers of a TV ad in South Florida, amid scenes of swaying palm trees, the Miami skyline and smiling Cuban-Americans. "Romney believes in us." ...Despite his hard line on immigration, Romney has rounded up endorsements from Hispanic Republican leaders across Florida, while pollsters and political analysts predict he will draw solid support from Hispanic voters in the primary..... "...I've already gotten three fliers from Romney - in Spanish," said DarioMoreno, a Miamipollster and professor at Florida International University who focuses on Hispanic voters. "CentralFlorida and the TampaBay area are where Newt...