A raft of evidence shows that caste discrimination has been imported from India to the United States. Indians and Indian Americans are often held up as a “model minority” in the United States. Members of this community are more likely to be highly educated and to have health insurance, make more money, work in more senior positions, and have lower rates of poverty than both the average immigrant and the average American. They are well represented in science, technology, engineering, and mathematics—the so-called STEM subjects—and more and more of them occupy roles of political and social influence, including Vice President...