Not to say that this is authoritative, but an article in the Harvard Law Review argues that "caste discrimination is a type of racial discrimination, religious

Not to say that this is authoritative, but an article in the Harvard Law Review argues that "caste discrimination is a type of racial discrimination, religious discrimination, and national origin discrimination — all covered under Title VII". Nonetheless, my hunch is that legal or not legal, this kind of discrimination would be extremely unpalatable to most Americans across the political spectrum. https://harvardlawreview.org/2021/06/title-vii-and-caste-discrimination/ https://harvardlawreview.org/2021/06/title-vii-and-caste-dis...