WASHINGTON—The U.S. Federal Communications Commission voted unanimously on Thursday to advance a plan to ban approvals for equipment in U.S. telecommunications networks from Chinese companies deemed national security threats like Huawei and ZTE. Under proposed rules that won initial approval, the FCC could also revoke prior equipment authorizations issued to Chinese companies. A Huawei spokesperson, in an email, called the FCC revision “misguided and unnecessarily punitive.” Acting FCC Chairwoman Jessica Rosenworcel said the new measures would “exclude untrustworthy equipment from our communications networks… We have left open opportunities for (Huawei and other Chinese equipment) use in the United States through our equipment authorization process. So here we propose to close that door.” FCC Commissioner Brendan Carr said the FCC has approved more than 3,000 applications from Huawei since 2018. The FCC action would prohibit all future authorizations for communications equipment deemed to pose an unacceptable risk to national security. In …