Yet Riley says Guzman is more ruthless than Capone.
"If I was to put those two guys in a ring, El Chapo would eat that guy (Capone) alive," Riley said while pointing to pictures of the men in his office.
Sinaloa and other Mexican cartels shipping drugs to Chicago are rarely directly linked to slayings in the city, but Riley said cartel-led drug trafficking is an underlying cause of territorial battles between street gangs that are blamed for rising homicide rates. Riley described Chicago as one of Sinaloa's most important cities, not only as an end destination for drugs but as a hub to distribute drugs across the U.S.
"This is where Guzman turns his drugs into money," he said.
Despite his nickname — "El Chapo" means "shorty" in Spanish — Guzman is one of the world's most dangerous and most wanted outlaws. He's also one of the richest: Forbes magazine has estimated the value of his fortune at around $1 billion.
Guzman has been indicted on federal trafficking charges in Chicago and, if he is ever captured alive, U.S. officials want him extradited here to face trial. The U.S. government has offered a $5 million reward for his capture.
"His time is coming," Guzman said. "I can't wait for that day."