China Mobile (CHL) is a state-owned enterprise with almost 900 million subscribers, and there is currently no shortage of distrust in the U.S. regarding Chinese companies with ties to the state, particularly in the telecommunications arena. American lawmakers have, for example, described the phone-makers Huawei and ZTE (ZTCOY) as “a severe national security threat.”

So it goes with China Mobile. Some seven years after the company asked the Federal Communications Commission (FCC) for a license to carry voice traffic in and out of the U.S.—something that would require connecting U.S. telecoms networks to China Mobile’s network—the White House effectively closed off the possibility with a negative recommendation.

“In the current national security environment, it is the view of the Executive Branch, after consultation with the U.S. intelligence community and after consideration of additional information submitted by the applicant, that China Mobile’s application does not serve the public interest,” the Commerce Department’s National Telecommunications and Information Administration (NTIA) division, which advises the president on such matters, said in a filing to the FCC. “To the contrary, the authorization would pose substantial, unacceptable national security and law enforcement risks.”

As for why it took this long to grapple with an application lodged back in 2011, telecoms trade publication Broadcasting & Cable said “an NTIA source cited bureaucracy and due diligence.” The NTIA’s filing certainly makes it clear that the U.S. had national security concerns about China Mobile all along, for years before Trump ascended to the presidency.

However, the timing makes it likely that the China Mobile block will fuel the burgeoning trade war between the U.S. and China, which was partly precipitated by Trump’s assertion that the Chinese are trying to take advantage of the U.S. via espionage and technology theft.

The NTIA’s filing noted that, were China Mobile to get its “common carrier” license, it would gain more access to U.S. telecoms network infrastructure—from cables to satellites—that “was created with minimal security features because it was assumed that only trusted parties would have access.”

“The Chinese government could therefore seek to use China Mobile’s common carrier status to exploit the public-switched telephone network in the Unites States and increase intelligence collection against U.S. government agencies and other sensitive targets that depend on this network,” the filing read. “As a result, the Chinese government, through China Mobile, would have a greater ability to monitor, degrade, and disrupt U.S. government communications.”