In a historic move, the California State Senate on Thursday passed a legislation that would ban caste-based discrimination in the State. Passed by 34-1 vote, the bill - SB 403, would make California the first US state to add caste as a protected category in its anti-discrimination laws. Promoters of the bill, being led by non-profit Equality Lab, said that a similar bill is being introduced in the State House of Representatives, before it can be sent to the Governor to be signed into a law.