The Federal Communications Commission (FCC) is looking to strip three Chinese telecom firms of their US operating licenses.
China Unicom Americas, Pacific Networks, and ComNet had not explained their links to Beijing, the FCC said.
The US communications watchdog has long argued those links could pose a national security risk.
The move signals that US president Joe Biden is likely to continue Donald Trump’s tough approach to Chinese tech firms.
The FCC voted unanimously on Wednesday to revoke the licenses of the three companies, a move that would see them expelled from the US market.
The companies were asked in April last year to deal with concerns over their links to the Chinese government, which the FCC claimed could leave them susceptible to its “exploitation, influence, and control”.
But while the companies have tried to address the FCC’s concerns, it has not accepted their explanations.
“The threat to our networks from entities aligned with China is one that we must address head on, and that i am pleased that the FCC continues to point out the strength and resolve necessary to satisfy this menace,” FCC Commissioner Brendan Carr said during a statement.
China Unicom is a unit of one of China’s three major telecommunications networks.
Pacific Networks resells international voice and data services to US operators, while its subsidiary ComNet provides a spread of mobile services, including SIM cards and international calling cards.
The FCC granted approvals for the three companies to work within the US quite a decade ago when there was less concern within the US about Chinese technology companies.