MEXICO CITY — A longtime senior leader of the Sinaloa cartel, Ismael Zambada Garcia, or “ El Mayo, ” and a son of famed drug lord Joaquin “ El Chapo ” Guzmán were taken into custody Thursday by U.S. authorities in Texas, according to senior Mexican and U.S. officials.... 1 supplier of fentanyl to the United States.A Department of Homeland Security official with knowledge of the arrest said Zambada was fooled into boarding a private plane bound for the United States with the former drug lord’s s