MEXICO CITY (AP) — Despite the arrest, extradition and now conviction of narco-lord Joaquin "El Chapo" Guzman, his Sinaloa cartel marches on — and the proof is in huge, multi-drug shipments detected on the border in recent weeks.

Those heaping bags of fentanyl and plastic tubs of crystal meth, heroin and cocaine offer no sign that the cartel has been weakened, lost sway over its traditional territory in northwestern Mexico or seen its international reach curtailed by the loss of its notorious leader.

"It's still a major, major force in the Mexican criminal underworld," Mexican security analyst...