NEW YORK (AP) - Stephen Colbert has announced his candidacy for president on " The Colbert Report ," tossing his satirical hat into the ring of an already crowded race. "I shall seek the office of the president of the United States ," Colbert said Tuesday on his Comedy Central show as red, white and blue balloons fell around him. Colbert, 43, had recently satirized the coyness of would-be presidential candidat...