"Human traffickers prey on some of the most vulnerable members of society. Human trafficking, as defined in federal law, includes sex trafficking, in which a commercial sex act is induced by force, fraud, or coercion, or in which the victim is under 18 years of age; and labor trafficking, i.e., the recruitment, harboring, transportation, provision, or obtaining of a person for labor or services through the use of force, fraud, or coercion. Human trafficking of either type does not require movement, either within the United States or across a U.S. border. [...] The Attorney General has developed and will implement and maintain this National Strategy for Combating Human Trafficking (National Strategy) in order to enhance the Department's work to combat the atrocity of human trafficking. The National Strategy sets forth plans to enhance coordination within the Department, and to develop specific strategies within each federal district to stop human trafficking."
U.S. Department of Justice: http://www.justice.gov/