Chicago TribuneChicago police taught to be more alert to signs of human traffickingChicago TribuneA 2010 Illinois law that defined underage prostitutes as victims instead of criminals has spurred Chicago police to be more alert to signs of human trafficking, which experts say is second only to the drug trade as the biggest illegal business in the ...CPD cracking down human traffickingABC7Chicago.comall 2 news articles »