Former Mayor Rudolph Giuliani said Thursday that he has not ruled out running for governor or president, but he offered no specifics on what his political future might hold. "I haven't ruled it out and I haven't ruled it in," a relaxed-looking Giuliani said Thursday at a news conference to announce a venture with a big Texas law firm. "I don't know the answer to that until the future." Giuliani, whose political stock soared as he led New York through the horror of the Sept. 11, 2001, assault on the World Trade Center, is a leader in national polls for...