Brazilian Black belts: Work visa

I’m not going too deep into this to prevent blow back but I goto a gym on the west coast. I suspect my gym is using sponsored visas to take advantage of Brazilian black belts.

Gym brings Brazilian black belts to US via sponsored visas, provides shitty living and phone. Contractually limits their ability to learn, currently no access to transportation, keeps them isolated from community.

Something feels off here to the point we are wondering if there is a quasi-indentured servitude situation happening.

The current professor is such a good dude but I fear he’s being taken advantage of.

My exit from the gym is imminent due to these ethical concerns. Which is hard because I’ve developed a bond with the professor and he is a genuine salt of the earth guy.

Are there resources to help this guy out without screwing him over?