The New York Stock Exchange is starting the process of delisting securities of three Chinese telecom companies, China Telecom Corporation Limited, China Mobile Limited and ChinaUnicom (Hong Kong) Limited, it said in a statement on Thursday.

The move comes after President Donald Trump in November unveiled an executive order barring US investments in Chinese companies that Washington says are owned or controlled by the Chinese military, which could impact some of China’s biggest companies.

The November executive order sought to give teeth to a 1999 law that mandated that the Department of Defense compile a list of Chinese military companies. The Pentagon, which only complied with the mandate this year, has so far designated 35 companies, including oil company CNOOC Ltd and China’s top chipmaker, Semiconductor Manufacturing International Corp.

Each of the telecoms companies named by the NYSE also has a listing in Hong Kong.

NYSE said that the issuers were no longer suitable for listing as the order prohibits any transactions in securities “designed to provide investment exposure to such securities, of any Communist Chinese military company, by any United States person.”

NYSE said that it would suspend trading on either January 7 or January 11. The issuers have a right to a review of the decision.

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