Mexican who gunned down Houston cop WILL be executed tonight despite last-minute pleas from Mexico government A Mexican held on death-row in a Texan prison for murdering a policeman will be executed tonight despite last-ditch appeals from lawyers for clemency. Edgar Arias Tamayo, 46, was set for lethal injection this evening for shooting of Guy Gaddis, 24, in January 1994. The case has been a focus of protests in his home town and diplomatic pressure, with U.S. Secretary of State John Kerry calling for a delay to Tamayo's execution. Tamayo's lawyers had lodged an appeal arguing that he was ineligible...