I almost had a Joseph Welch moment on Wednesday. I've calmed down a bit since, but I'm still on the edge. Joseph Welch represented the Army in the 1954 Army-McCarthy hearings. It was a time, like the present, when the nation faced a real external threat; alas, some people tried to use that threat to gain political advantage and suppress dissent. When Senator Joseph McCarthy tried to smear one more innocent victim, Welch burst out with a heartfelt soliloquy that earned him a place in the pantheon of liberty. It ended: "Have you no sense of decency, sir? At long...