The move targeting Chinese manufacturer Hoshine Silicon Industry (Shanshan) Co., Ltd., announced Thursday, has implications for solar’s supply chain and could force U.S. companies to find material elsewhere. It comes after both the Trump and Biden administrations accused China of “genocide” in a campaign to erase the culture of the predominantly Muslim Uyghurs. “Personnel at all U.S. ports of entry have been instructed to immediately begin detaining shipments that contain silica-based products made by Hoshine,” the White House said in a statement. “The United States will not tolerate forced labor in our supply chains.” The steps fall short of a broader ban that had been sought by some activists, organized labor and lawmakers. But a person familiar with the U.S. move, who spoke anonymously before the announcement was made, said further actions may follow and investigations are ongoing.