The last-minute attempt to derail Brett Kavanaugh’s confirmation as the next Supreme Court justice has just hit a serious snag. Facing damaging but almost completely unsubstantiated claims that he acted improperly with a girl back when he was a teenager, the conservative nominee has dug into his personal archives to defend himself. Up until now, the vague accusations made by Christine Blasey Ford had only resulted in a “he said, she said” stalemate. Liberals insisted that Blasey Ford’s story of a bad encounter at a drunken party be believed, while conservatives have pointed out that the nearly 40-year-old claim is...