Mexican cartel's cheap fentanyl floods US through 'El Chapo' sons.

The sons of Sinaloa cartel boss Joaquín “El Chapo” Guzmán have shifted the family business into fentanyl, establishing a network of labs churning out massive quantities of the cheap, deadly drug that they smuggled into the U.S. Synthetic opioids, mostly fentanyl, now kill more Americans every year than died in the Vietnam, Iraq and Afghanistan wars combined. The cartel went from its first makeshift fentanyl lab to a network of labs concentrated in the northern state of Sinaloa in less than a decade. The Guzmán Salazar indictment makes an initial attempt at disrupting the cartel’s supply chain, naming four people tied to a China-based chemical company and a broker in Guatemala who allegedly helped the cartel get the chemicals and even instructed them on the best recipes for fentanyl.