According to a study by Free the Slaves and the Human Rights Center at the University of California Berkeley, an estimated 10,000 people are estimated to be working in forced labor conditions in the United States as a result of Human Trafficking. The study, Hidden Slaves: Forced Labor in the United States, further states that the victims have been trafficked from over 35 countries, led by China and followed by Mexico and Vietnam.
Source: Free the Slaves and the Human Rights Center at the University of California, Berkeley, “Hidden Slaves: Forced Labor in the United States,” September 2004.