Attorney General's Annual Report to Congress and Assessment of U.S. Government Activities to Combat Trafficking in Persons: Fiscal Year 2012 [open pdf - 2MB]
From the Introduction: "Human trafficking endangers the lives of millions of people around the world, and it is a crime that knows no borders. Trafficking networks operate both domestically and transnationally, and although abuses disproportionally affect women and girls, the victims of this ongoing global tragedy are men, women, and children of all ages. Around the world, we are monitoring the progress of governments in combating trafficking while supporting programs aimed at its eradication. From forced labor and debt bondage to forced commercial sexual exploitation and involuntary domestic servitude, human trafficking leaves no country untouched. With this knowledge, we rededicate ourselves to forging robust international partnerships that strengthen global anti-trafficking efforts, and to confronting traffickers here at home."
U.S. Department of Justice: http://www.justice.gov/