China’s robotics firms have run into a fresh obstacle in their global expansion, after the United States banned imports of new foreign-made models, which analysts say could benefit Tesla and other American developers. The Federal Communications Commission (FCC) added foreign-produced “advanced robotic devices” to its Covered List on Tuesday, blocking new models from obtaining the authorisation required to be imported and sold in the US. The ban will cover all new humanoids, quadrupeds and a...