MARSHALLTOWN, Iowa (AP) - Hillary Rodham Clinton said Saturday that if she is elected president, she would make her husband a roaming ambassador to the world, using his skills to repair the nation's tattered image abroad. "I can't think of a better cheerleader for America than Bill Clinton, can you?" the Democratic senator from New York asked a crowd jammed into a junior high school gymnasium. "He has said he would do anything I asked him to do. I would put him to work." Clinton spoke at a town hall-style meeting Saturday where she took questions from about 200 people....