Is any of his work about caste in the US or Seattle? PPS: Mention of caste triggers most Indians, even those who are not living abroad. My wife (south India

Is any of his work about caste in the US or Seattle? PPS: Mention of caste triggers most Indians, even those who are not living abroad. My wife (south Indian Brahmins) feels somewhat annoyed with my interest in caste. I won't ask my fellow Indians about caste, ever!! It triggers them more than saying bad thing about Modi. I know the feeling. Asking for data on caste discrimination in US triggers the other set of Indians more than saying any good thing about Modi/India.