Pope Francis and Old Joe Biden are two of the towering figures of our times, and that says more about our times than it does about them. The two actually have a lot in common. Both are Roman Catholics, although both have sparked considerable speculation as to whether they are really believers at all. Both have a tendency to say outrageous things that are left to their handlers to do their best to “clarify.” And both are about as far to the left as it is possible to go, as the pontiff affirmed again Sunday with the latest guilt trip...