Great, good luck enforcing that. Good luck even verifying caste identity. The last name is not even close to 100% valid in determining caste identity. Also, I think whether we admit it or not, we definitely have a notion of caste in the west except it’s a combination of race and socioeconomic identity. Growing up my white friends had a whole network of friends with summer homes and we once took a tour around the USA just staying in unoccupied summer homes of rich white friends.