Ever since their epic failure on a sexual assault story that never happened at the University of Virginia, Rolling Stone magazine is still trying to repair its damaged reputation. They lost a libel suit in that fiasco. The reporter who wrote it has gone into the wilderness, so when you see an RS story—skepticism abounds, right? When it comes to music and movie reviews, Rolling Stone is great, but their political stuff is, well, what you’d expect from a liberal staff. No shocker, but at times—a blind squirrel finds a nut. Tuesday’s Democratic Debate in Iowa hosted by CNN was...