Second Amendment: In the "living Constitution" era, the Supreme Court rediscovers original intent and rightly rules that the right to bear arms applies to all Americans just as the rest of the Bill of Rights does. It's hard to conceive how the justices could have decided otherwise. But by the narrowest of margins — 5-4 — they have reaffirmed that keeping and bearing arms is an inalienable and individual right like speech and religion, and that it applies to all individuals as the Founding Fathers intended. Why anyone thinks the Second Amendment does not apply to all Americans is a...