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.
Sexual slavery
The Fundamentalist Church of Jesus Christ of Latter-Day Saints (FLDS) has been suspected of trafficking underage women across state lines, as well as across the US–Canada and US–Mexico borders, for the purpose of sometimes involuntary plural marriage and sexual abuse. The FLDS is suspected by the Royal Canadian Mounted Police of having trafficked more than 30 under-age girls from Canada to the United States between the late 1990s and 2006 to be entered into polygamous marriages. RCMP spokesman Dan Moskaluk said of the FLDS's activities: "In essence, it's human trafficking in connection with illicit sexual activity." According to the "Vancouver Sun," it's unclear whether or not Canada's anti-human trafficking statute can be effectively applied against the FLDS's pre-2005 activities, because the statute may not be able to be applied retroactively. An earlier three-year-long investigation by local authorities in British Columbia into allegations of sexual abuse, human trafficking, and forced marriages by the FLDS resulted in no charges, but did result in legislative change. Former FLDS members have also alleged that children belonging to the sect were forced to perform sexual acts as children upon older men while being unable to leave. This has been described by numerous former members as sexual slavery, and was reported as such by the "Sydney Morning Herald", One former resident of Yearning for Zion, Kathleen Mackert, stated: "I was required to perform oral sex on my father when I was seven, and it escalated from there."