Three Mexican drug cartels operated in the El Paso-Juarez region Daniel Borunda/El Paso Times (Photo: Courtesy Chihuahua state government) Gold-plated handguns, cocaine and pickups were seized Wednesday during the arrest of one of the reputed leaders of the Sinaloa drug cartel in Chihuahua.Chihuahua state police arrested Leonel "El Cuate" Salgueiro during an "intense operation" at dawn in the city of Parral, Chihuahua Gov. Javier Corral said in a video message.The governor described Salgueiro as one of the region's principal drug distributors who was also responsible for violence . . .