If the Republicans had nominated a skunk in the contest against Hillary Clinton, the National Rifle Association would have heartily embraced the odoriferous Mr. Stinky. A week ago, the NRA, which has millions of members and is eager to target congressional races in which guns are an issue, endorsed Donald Trump for president. He spoke, of course. Hand in the air for emphasis, he told the NRA that Clinton would try to "abolish" the Second Amendment. How does one "abolish" anything in the Constitution? It takes many steps. It's not going to happen. But that doesn't matter. It was what...