Sino-US relations are showing renewed signs of deterioration ahead of President Xi Jinping's expected visit to the US in late September. The ministry also barred Chinese companies from dealing with Applied DNA Sciences and five other U.S. entities accused of "supporting illegal U.S. sanctions concerning Xinjiang." The ministry's announcements come as the Trump administration has added 43 Chinese companies to its forced-labor import blacklist and imposed tighter Federal Communications Commission restrictions on Chinese drones, routers, telecommunications equipment, and other high-tech devices. China has no choice but to take necessary countermeasures in response," the ministry wrote in a statement. Uncertainty surrounding Beijing's drone export controls should concern U.S. hobbyists and commercial operators.