Victims of human trafficking in the United States also include U.S. citizens and residents trafficked within its borders.  Much like the majority of other countries affected by human trafficking, the U.S. has a large internal or "domestic" component of human trafficking for the purposes of both sexual and labor exploitation.  One of the largest forms of domestic sex trafficking in the U.S. involves traffickers who coerce women and children to enter the commercial sex industry through the use of a variety of recruitment and control mechanisms in strip clubs, street-based prostitution, escort services, and brothels.  Domestic sex traffickers, commonly referred to as pimps, particularly target vulnerable youth, such as runaway and homeless youth, and reinforce the reality that the average age of entry into prostitution is 12-13 years old in the U.S.  Recent cases have also demonstrated that labor trafficking of U.S. citizens occurs in locations such as restaurants, the agricultural industry, traveling carnivals, peddling/begging rings, and in traveling sales crews.