san francisco area. but kourgt to a 2004 report from the u.s. department of justice, an estimated 14 to 17,000 people are trafficked in to the united states every year. making the crime as prevalent as homicide. put to work in popular restaurants, major hotel chains and factories. these silent victims says lu are the human cost of the prices customers pay for food and services in big cities like san francisco. >> we have seen anyone as young as 7 and anyone as old as 75 years old, men and women. we have also seen sex trafficking cases, but also a lot of labor cases involving domestic servitude, hotel and restaurant work. >> reporter: lu says when they are wealthy foreigners or diplomates they have little incentive to respect u.s. laws. exhausted and alone after two years lily worked up the nerve