I'm curious about gambling while on a work visa. It seems obvious that spending your vacation in Vegas is acceptable, but what if I think I'm good enough to bec

I'm curious about gambling while on a work visa. It seems obvious that spending your vacation in Vegas is acceptable, but what if I think I'm good enough to become a professional poker player and decide to pursue that part-time while working full-time. At what point (if at all) does it become an immigration issue?