Prosecutors say Alex Campbell recruited victims to his Mount Prospect massage parlor between July 2008 and January 2010 with promises of a place to live and help with their immigration status. He then allegedly confiscated their passports and visas.
Prosecutors say Campbell made the women get tattoos and told them the mark made them his property.
"This is a human trafficking case," said Diane MacArthur, Assistant U.S. Attorney. "People who were not born here but came here for different reasons. And through Alex Campbell they lost their identity, their identity cards, their spirit, their dignity, their self respect and their ability to leave."
Campbell was found guilty of several charges including forced labor and sex trafficking. His attorney plans to appeal the conviction.