The Seattle City Council on Tuesday added caste to the city’s anti-discrimination laws, becoming the first U.S. city to specifically ban caste discrimination. Calls to outlaw discrimination based on caste, a division of people based on birth or descent, have grown louder among South Asian diaspora communities in the United States. Proponents of the ordinance that was approved by a 6-1 vote Tuesday say caste discrimination crosses national and religious boundaries and that without such laws, those facing caste discrimination in the U.S. will have no protections.