Migrant sex work
Because of their illegal and vulnerable economic status, some migrant sex workers may find themselves in situations where coercion and forced sex work may be present. Under international legal definitions of human trafficking, forced and coercive forms of sex work are considered to be instances of involuntary sex trafficking. However, many scholars caution against categorizing sex workers as either completely voluntary or completely involuntary. They often argue that sex work, like other forms of labor, can span a spectrum between the two extremes, with most circumstances falling in the middle through various labor rights violations. Nevertheless, the vulnerability of migrant sex workers can make them susceptible to exploitative or coercive labor practices that can resemble or be human trafficking.
Sex trafficking
International pressure to address trafficking in women and children became a growing part of the social Reform movement in the United States and Europe during the late nineteenth century. International legislation against the trafficking of women and children began with the conclusion of an international convention in 1901, and the International Agreement for the suppression of the White Slave Traffic in 1904. (The latter was revised in 1910.) The first formal international research into the issue was funded by American philanthropist John D. Rockefeller, through the American Bureau of Social Hygiene. The League of Nations, formed in 1919, took over as the international coordinator of legislation intended to end the trafficking of women and children. An international Conference on White Slave Traffic was held in 1921, attended by the 34 countries that ratified the 1901 and 1904 conventions. Another convention against trafficking was ratified by League members in 1922, and like the 1904 international convention, this one required ratifying countries to submit annual reports on their progress in tackling the problem. Compliance with this requirement was not complete, although it gradually improved: in 1924, approximately 34 percent of the member countries submitted reports as required: this rose to 46 percent in 1929, 52 percent in 1933, and 61 percent in 1934. The 1921 International Convention for the Suppression of the Traffic in Women and Children was sponsored by the League of Nations. In 1923, a committee from the bureau was tasked with investigating trafficking in 28 countries, interviewing approximately 5,000 informants and analyzing information over two years before issuing its final report. This was the first formal report on trafficking in women and children to be issued by an official body.