You might ask yourself what more could the U.S. do to hurt Huawei? Branded as a national security threat in the states, banned from accessing its U.S. supply chain (which it spent $11 billion on in 2018) and blocked from having its equipment used in U.S. 5G networks, Huawei still managed to top Apple by shipping approximately 240 million smartphones in 2019 even though it was forced to replace the Google Mobile Services version of Android with an open-source version.

U.S. drafts a proposal that could really send Huawei into a tailspin

It obviously would be a big blow if Huawei was unable to have its chips made by TSMC, especially since the foundry is about to start churning out more powerful 5nm chips in the middle of this year. The process node number provides a reference to the number of transistors found inside a small dense integrated circuit. The lower the process node, the higher the number of transistors inside a chip, more transistors inside a chip make it more powerful and energy-efficient. For example, the currently employed 7nm Apple A13 Bionic sports 8.5 billion transistors and this year’s 5nm A14 Bionic could have as many as 15 billion transistors inside. Only TSMC and Samsung will be producing 5nm chips for mobile devices this year so losing access to this technology could be a huge blow to the company.

The Commerce Department wants to drop that threshold to 10% which would give the U.S. export control over most products made overseas with U.S.-sourced content. The Pentagon didn’t want the rule change for fear that U.S. suppliers would lose sales to Huawei forcing them to cut spending on research and development. The Pentagon worries that by cutting R&D, American firms would lose their innovative edge in the global tech marketplace.

A change in this rule could allow the U.S. to control the export of chips scheduled to be shipped to Huawei. A report published last year by China’s Everbright Securities said, “There is no production line in China that uses only equipment made in China, so it is very difficult to make any chipsets without U.S. equipment.” With that in mind, Huawei could be in very serious trouble if this proposal gets past the “draft” stage.

A Commerce Department spokesman pointed out that recent allegations made by the U.S. charging Huawei with stealing trade secrets “reaffirm the need for caution in considering license applications. The U.S. continues to have major concerns about Huawei.” A TSMC spokesman said that the company doesn’t respond to hypothetical questions and questions about individual customers. Huawei did not respond to questions.

The U.S. considers Huawei to be a security risk because of the company’s ties to the communist Chinese government.