LOS ANGELES — Arnold Schwarzenegger has angered America's powerful gun lobby by backing legislation requiring semi-automatic handguns to mark bullets with serial numbers to help police identify casings found at crime scenes. The former Hollywood action hero, who played trigger-happy characters in violent films such as The Terminator, approved the crime-fighting technology despite opposition from the National Rifle Association, which said it could be used to implicate... (GunPolicy.org)