Air travelers in the United States are now given two options at the security gate -- be groin-groped by gloved Transportation Security Administration agents, or photographed "naked" in the back-scatter X-ray device that Jeffrey Goldberg at The Atlantic calls "the porn machine." You can thank failed "underwear bomber" Umar Farouk Abdulmutallab for this one. While armies tragically tend to fight the last war, the TSA looks for the item the most recent terrorist used. After 9/11, everything sharp -- even tweezers -- was banned. Ever since Richard Reid tried and failed to light his loafers on fire, security agents have...