Trump Blocks China Emcore Chip Deal, Escalating U.S.–China Semiconductor Tensions

On January 2, 2026, President Donald Trump blocked a $2.92 million transaction involving the HieFo Corp a Chinese-owned company involving Emcore most important semiconductor strategic assets and this step deepened the already existing United States-China technological conflict.  

In an order released by the White House, Trump said HieFo was

“controlled by a citizen of the People’s Republic of China”

and that its 2024 acquisition of Emcore’s businesses led the president to believe that it may

“take action that threatens to impair the national security of the United States.”

Deal Breakdown

HieFo is a Delaware-based company under the leadership of an individual citizen of the People’s Republic of China and was co-founded by Emcore Vice President Genzao Zhang. 

On April 30, 2024, the company bought the digital chip development portfolio of Emcore and InP wafer fabrication manufacturing. 

The assets located in New Jersey include essential telecommunications data communications and artificial intelligence connectivity and critical intellectual property, on which both defense and cloud infrastructure are based. 

The United States panel conducted a non-notified investigation uncovering latent risks without a voluntary filing until a Committee on Foreign Investment in the US (CFIUS) filing was done.  

Security Risks Exposed

CFIUS identified two primary risks:

• The possible access by foreigners to the proprietary technology at Emcore.
• The risk of deflecting InP chips to the U.S. supply chains, which are essential in optical lasers systems and sensor technologies.

Under the executive order, the transaction is prohibited, and HieFo has been given 180 days to divest the assets and destroy or transfer sensitive intellectual property under U.S. government oversight.

One of the Treasury statements emphasized that the order itself is an example of an enhanced approach of CFIUS to non-notified cases with references to 396 of them between 2020 and 2023.  

Broader Implications

This move reminds of similar Trump vetoes of the past, including one of Lattice Semiconductor, a $1.3 billion acquisition, in which Trump has adopted a zero-tolerance policy toward semiconductor acquisitions involving any Chinese company. 

Analysts in the industry forecast an increasing obstacle, and the number of CFIUS filings already reached 436 in 2021 and shows an upward trend.  

Road Ahead

HieFo must also provide weekly following compliance reporting, additional divestiture is expected, as Trump tries to cement U.S. dominance in semiconductor industry, as this may redefine global supply chains by 2027 as more artificial intelligence-driven strategic competition  accelerates.