America's gun control proponents might want to consider shooting (pun intended) this memo to Chicago Mayor Richard M. Daley. "Dear Mayor Daley: Please shut up. You ain't helping us." Is there anyone doing more damage against advocates of gun control than Daley? The man is a walking billboard for right-to-carry laws. Anyone needing proof of that might want to read the statements he made in the wake of an 80-year-old Chicago man fatally shooting a career criminal who invaded his home. The background story goes like this. The elderly man is a Korean War veteran who bought a handgun after...