>Crime group yields to intensifying U.S. law-enforcement pressure and is kidnapping or killing producers who defy its ban on trafficking the opioid >CULIACÁN, Mexico—The Sinaloa cartel, the leading exporter of fentanyl to the U.S., is prohibiting the production and trafficking of the illegal opioid in its territory after coming under increasing pressure from U.S. law enforcement, cartel members say. >The order comes from the “Chapitos,” the group led by the four sons of imprisoned drug lord Joaquín “El Chapo” Guzmán, who transformed the Sinaloa cartel into a global empire managing the supply of narcotics, from Mexican heroin to Colombian cocaine and fentanyl made with precursors from Asia. >The directive from the most powerful faction within the criminal group aims to evade pressure from U.S. law enforcement, operatives say, though some U.S. officials are skeptical that the ban will endure. . . [Source Article](https://www.wsj.com/world/americas/mexican-sinaloa-cartels-message-to-members-stop-making-fentanyl-or-die-b96d3e09?mod=djemalertNEWS)