The US Commerce Department on Monday added 11 Chinese companies implicated in what it called human rights violations in connection with China's treatment of its Uighurs in Xinjiang in western China to the US economic blacklist. The department said the companies were involved in using forced labor by Uighurs and other Muslim minority groups. They include numerous textile companies and two firms the government said were conducting genetic analyses used to further the repression of Uighurs and other Muslim minorities. Blacklisted firms cannot buy components from US companies without US government approval. It was the third group of companies and institutions in China added to the US blacklist, after two rounds in which the Trump administration cited 37 entities it said were involved in China's repression in Xinjiang.