There was no avoiding it, and Fox News Channel didn't really try: Megyn Kelly was the star of the show at Thursday's Republican presidential debate in Des Moines. Kelly, of course, is a big reason that GOP front-runner Donald Trump refused to participate. Ever since their run-in at the first primary debate in August, Trump has maintained that Kelly is a "lightweight" who doesn't ask fair questions. (Never mind that he previously said she's a great moderator.) Unreasonable as Trump's critique might be, all eyes were on Kelly and her questions in Des Moines.