A man who is risking his life to talk to "48 Hours" says the heroin is brought to Chicago by one main source: Mexico's infamous Sinaloa Cartel.
"And the worst part is they are armed," the man said. "It's practically a time bomb, and this is the reality we're living."
"How powerful is the Cartel influence in Chicago right now?" Keteyian asked.
"Very strong the influence of the Sinaloa Cartel here in Chicago and it's getting stronger," the man said.
He should know. He was once trusted by the cartel to smuggle drugs to Chicago. "I tell them if they have 50 kilos, I'll buy that...if they have 100 kilos in a week, I can sell that too," he said.
Jack Riley says the Sinaloa Cartel was run by one of the world's most dangerous men: Joaquin "Chapo" Guzman, who escaped from a Mexican prison in 2001. The Feds say Guzman targeted Chicago specifically.
Why Chicago? "It's the same reason there's many fortune 500 companies here," Riley told Keteyian. "It is a business logistic home run."
The cartel is getting between 3 and 6k for each illegal smuggled into the US.
If there are 100k kids being smuggled..then that is between 300 and 600 million dollars of revenue. This is a big business making big money. It isn’t some spontaneous actions based on a U tube video and rumors.