The all-purpose fallback Charles Lane is a columnist for the Washington Post, which is about as in the tank for Hillary as any media outlet not spelled CNN. As such, he probably sees his role as a participant on any Fox News panel as balancing his conservative counterparts - in this case, Charles Krauthammer and Tucker Carlson. That’s fair enough. It probably is what Fox wants him to do. But it’s one thing to provide balanced based on a bona fide different point of view compared to your counterparts. It’s another thing to reach for any rejoinder, no matter how...