A proposal from the Trump administration to ban American telecommunications carriers from connecting with Chinese firms deemed security risks could significantly disrupt the global communications network, according to China Unicom's U.S. unit.In a recent filing to the Federal Communications Commission (FCC), China Unicom emphasized that prohibiting interconnection would harm U.S. companies with substantial business and supply chain ties to China. The FCC's proposal targets several Chinese telecom giants, citing national security concerns.If enacted, the measure could fracture essential segments of the global communications infrastructure. The FCC has also suggested banning certain Chinese-built consumer technology products, including drones and network routers,…