Caste in the USA is not direct or obvious though. It is a subtle taboo to even mention its existence. The real caste in the USA is the poverty line and exploitation inherent to capitalism. It is perfectly legal to discriminate for loans, and all of the goods and services available to the poor. Banks, utilities, housing, and the job market are all indirectly discriminatory in ways something like this can not address. This is one way places like India, where caste is a prominent social component, have something of an advantage. They have an addressable issue to fight against in the sociopolitical sphere. Every culture has a caste system to various degrees. I argue that it is harder to fight caste in places where it is not clearly defined and prosecutable. This may seem odd to someone accustomed to a caste dominated system, but here in the USA, this will likely only really apply to a situation where the plaintiff and defendant are both from a culture where caste is an established legal issue.