How smaller doses of more powerful drugs allowed Mexican cartels to overwhelm Mexican police and flood the US

A record-setting bust in October underscores how Mexico has become a hub for fentanyl. The Sinaloa and Jalisco New Generational cartels have increased production of the drug, a powerful synthetic opioid analgesic. A flood of fentanyl into the US has helped drive overdose deaths to new levels. Loading Something is loading. Ciudad Juárez, México -…