Cartel-linked cattle are entering the U.S. beef supply with clean USDA paperwork—and no one is watching the real owners. From smuggling routes in Chiapas to government-tagged animals in Jalisco, Mexico’s narco-ranching syndicates have mastered the art of meat laundering. Until we tie MCOOL to rancher of origin, Americans are eating beef with forged identities—and funding cartels by the kilo.