If “El Chapo” is extradited to Chicago, it will be the first time the Mexican drug lord steps foot in the Windy City. Despite never having been a visitor, El Chapo‘s fingerprints are all over the city’s drug trade and violence.

Joaquin Guzman was Chicago’s Public Enemy No. 1; the first individual to have that “honor” since Al Capone. The Sinaloa Cartel — Guzman’s creation — has been running drugs between Mexico and Chicago while generating billions of dollars for Guzman and causing thousands of deaths.

Guzman allied with Chicago’s street gangs turning the city into a shipment hub according to the Chicago Cime Commission’s John Pastuovic.

Guzman’s cartel brings marijuana, meth, heroin, cocaine and Ecstasy into the city and has become the “premier” drug smuggling cartel according to the U.S. Department of Justice.

Jack Riley, former head of Chicago’s Drug Enforcement Administration recently told CNN    the Sinaloa cartel-connected with “over 145,000 gang members.”

“The violence occurring in Chicago is happening because of turf wars where gang members are selling drugs,” says Pastuovic. “That’s what is driving the violence.”

According to a 2015 indictment, Guzman’s associates would smuggle drugs into America using tunnels, cars, trucks, and trains. The drugs went to Chicago, and other cities placed in stash houses and then passed on to wholesale dealers.

The profits were laundered as the cartel bribed public officials, kidnapped individuals and threatened the police with violence. The cartel is the result of the failed “drug war” which has left tens of thousands dead.

The violence led the city to name El Chapo Public Enemy No. 1, a title he will maintain until he is in the custody of American authorities.

While the West and South Sides of Chicago have been especially hard hit, it’s unlikely anyone can find a community that hasn’t been impacted by the drugs Chapo is responsible for bringing into the city.

“There just aren’t many drugs that are being bought and sold in Chicago that aren’t connected to Guzman and the Sinaloa cartel,” said Pastuovic.

Read more in the Chicago Tribune.