Says gunmakers are responsible for huge increase in homicides as illegal guns flow in
                                
                                
                                    (Newser) -
                                    Mexico wants to stop the flow of US-made guns across the border—so it's suing US gunmakers. The move, which the  Guardian  calls "unprecedented," does not target the US government but does target such big names as Smith & Wesson, Barrett Firearms, Colt’s Manufacturing Company, Glock,...