Trump Blocks $3 Million U.S. Chip Deal Citing National Security and China-Related Concerns

4 January 2026

President Donald Trump has taken a rare and high-profile action to block a small but symbolically significant semiconductor deal, ordering that U.S. photonics firm HieFo Corp must divest itself of assets it acquired from New Jersey-based aerospace and defense company Emcore after concluding that the transaction poses a potential national security threat and involves Chinese interests, a decision that highlights the intensifying scrutiny in Washington over foreign control of sensitive technologies and the broader geopolitical competition with China.

In an executive order issued on January 2, 2026, Trump said the 2024 acquisition by HieFo, valued at about $2.92 million, had “credible evidence” suggesting that the company was effectively controlled by a citizen of the People’s Republic of China. Although the order did not name specific individuals or elaborate on the precise nature of the threat, it asserts that the deal, if allowed to stand, could jeopardize U.S. national security interests by giving access to proprietary technology or production capacity that bears on defense or advanced computing capabilities. The president directed HieFo to divest all interests and rights in the Emcore assets within 180 days, an unusually direct intervention that underscores the administration’s willingness to respond to perceived vulnerabilities in the U.S. technology base.

The Committee on Foreign Investment in the United States, known as CFIUS, which reviews foreign acquisitions and investments for national security risks, had flagged the deal after its review, prompting Treasury Department officials to advise Trump that the transaction warranted reversal. CFIUS operates quietly and its determinations are often not public until a president acts, but its growing role in screening deals involving semiconductor and other high-tech assets reflects the heightened strategic value the U.S. government places on retaining domestic control of key intellectual property, supply chains and manufacturing platforms. In recent years, the committee has broadened its remit to counter perceived risks from foreign involvement in advanced technologies that could have dual use in both commercial and defense sectors.

Emcore’s assets at the center of the dispute encompass chip production and indium-phosphide wafer fabrication operations, components essential to certain advanced electronic systems. Indium-phosphide chips are used in high-frequency, high-speed devices and can play roles in communications, aerospace and defense applications. HieFo’s acquisition of these assets had drawn little public attention until the Biden administration’s approval in 2024, but Trump’s action has thrust the matter into the spotlight, illustrating how even relatively small deals can raise red flags amid geopolitical tensions and fierce competition for technological leadership.

For HieFo and its executives, the order comes as an abrupt reversal of a business transaction that had already closed, leaving the company to navigate a complex unwinding process under tight deadlines and regulatory oversight. HieFo was co-founded by Genzao Zhang, a former vice president of engineering at Emcore, and Harry Moore, previously a senior sales director in the same company. Neither HieFo nor Emcore publicly responded to the order immediately, leaving industry observers uncertain about how closely the firms anticipated such scrutiny or whether they might challenge the decision legally or through further engagement with CFIUS.

The move is consistent with a broader posture by the Trump administration and U.S. policymakers to tighten control over foreign access to American technology, particularly where China is involved. Over the past year, the government has implemented export controls and restrictions aimed at limiting the flow of advanced semiconductors and related equipment to Chinese companies, reflecting concerns that such technologies could enhance China’s military, surveillance or other strategic capabilities. These policies have been controversial, prompting some domestic manufacturers to warn about blowback on U.S. competitiveness, while national security advocates argue that preserving U.S. leadership in critical technology sectors is essential to broader strategic interests.

Analysts note that the context for Trump’s decision includes ongoing trade and tech tensions with China, where both countries are striving to secure dominance in areas such as artificial intelligence, quantum computing and next-generation chips. U.S. export controls introduced in recent years have sought to restrict China’s access to cutting-edge computing gear, while also cultivating domestic manufacturing through incentives in legislation like the CHIPS and Science Act. The combination of protective measures and strategic investments reflects a policy approach that blends economic and security objectives, aimed at reducing dependencies and bolstering U.S. capacity in industries deemed vital for future growth and defense.

Trump’s order to unwind the HieFo-Emcore deal therefore stands as part of a larger effort to draw clearer lines around foreign involvement in sensitive sectors, even as Washington and Beijing engage in complex diplomatic and economic interactions. While this particular deal’s financial scale is modest by industry standards, its implications for how the U.S. government perceives risk from foreign control or influence are significant, suggesting that the threshold for intervention may be lower in cases where national security and technological edge are perceived to be at stake. Observers will be watching closely to see whether this action sets a precedent for future enforcement and how companies, investors and foreign partners respond as the U.S. seeks to balance openness with protective oversight in an increasingly fraught global technology landscape.