Comment by altairprime

The distinction is that this is meant to bring in women in service to a man such that they’re sponsor is also their new boss in sex work, rather than women who service men while maintaining independent free will to control their career in sex work. The phrase “sex worker” could refer to either scenario and it’s important to distinguish the former from the latter in order to understand just how that particular criteria came to be. (And, yeah, it can be quite uncomfortable to discover that the U.S. has a special immigration pathway for wealthy and/or politically-connected men to import women as sex servants. Isn’t history swell, congress protects its privileges quite effectively, etc.)