Sacramento -- Former New York City Mayor Rudolph Giuliani, arguing that America is in desperate need of a Ronald Reagan-style optimistic vision, told California Republicans on Saturday that he wants to be a president who will "win the world for a set of ideas ... that I believe come from God." "We're for freedom, we're for the future, and in order to do that, we need leadership that uplifts us and moves us toward the future," Giuliani told the lunchtime crowd at the state GOP convention, all but formally declaring his candidacy for his party's presidential nomination. "You get...