The U.S. is banning the import of solar panel materials that are manufactured in Xinjiang, China, which the U.S. says is made by forced labor of the Muslim Uyghur minority. The U.S. added five companies to its import and export blacklist over the human rights concerns. China is the largest global provider of parts for solar power. Cotton and tomato products from Xinjiang are also prohibited following bans issued during the Trump administration.