2:05 PM EDT Thursday A Smyrna, Ga., gun shop, backed by privacy advocate and former U.S. Rep. Bob Barr, is suing New York City Mayor Michael Bloomberg for $400 million, claiming the media mogul organized an illegal and "nefarious" undercover sting on the small business. The lawsuit follows Bloomberg's own May lawsuit against the shop, Adventure Outdoors Inc., and 14 other gun dealers. Bloomberg had previously commissioned private investigators armed with hidden cameras to attempt "straw purchases," schemes that had legitimate buyers hand over purchased weapons to others not allowed to own firearms. The mayor released publicly the names of...