You could hear it in her voice. Hosting Meet the Press on Sunday, NBC's Andrea Mitchell was clearly exasperated by Donald Trump daring to warn Hillary Clinton he would raise Bill Clinton's "penchant for sexism" if he campaigns for her. Mitchell was so annoyed by it that she brought it up during three segments. - First, with Democratic presidential candidate Bernie Sanders, she let out a loud sigh in highlighting Trump "attacking" Bill Clinton: "Are we going to get into an argument not only of sexism between Donald Trump and Bill Clinton but, eh, Donald Trump attacking Bill Clinton?" Second,...