Comment by colmmacc

Interestingly, there's a whole category of H1B visas just for fashion models. H-1B3, which is for models with "distinguished merit and ability".

A famous supermodel can most likely get an O1 visa, for people of extraordinary ability. But agency models more commonly work on H1-B. Melania Trump is a famous example. These visas are tied to an employer and there's less portability. It's a two tier system.

Personally I think that there is some harm here. Agencies bring in young women from relatively poor countries and they are put in conditions where abuse, even sexual assault, is common and can face pressures to tolerate conditions and shoots that a local person with a safety network would not.