The US Federal Communications Commission probed Chinese companies placed under the commission's "covered list" to find out whether they are circumventing US restrictions, it said Friday.
The companies could still be operating in the US because they do not believe the designation disallows certain types of operations, Chairperson Brendan Carr said.
"Some or all of these Covered List entities are trying to make an end run around those FCC prohibitions by continuing to do business in America on a private or 'unregulated' basis," Carr said.
Among those under the covered list include Huawei, ZTE (HKG:0763, SHE:000063), Hytera Communications (SHE:002583), Hikvision (SHE:002415), China Mobile's (HKG:0941, SHA:600941) China Mobile International USA, China Telecom's (HKG:0728, SHA:601728) China Telecom (Americas), Dahua Technology (SHE:002236), and China Unicom's (SHA:600050) China Unicom (Americas).
The FCC will move to close what it calls loopholes that have allowed 'untrustworthy, foreign adversary state-backed actors to skirt our rules," Carr said.