President Donald Trump has blocked a $3 million chip acquisition by HieFo Corp, citing national security and China-related concerns — a move that underscores escalating U.S. scrutiny of foreign ownership in critical tech sectors.
President Donald Trump issued an executive order Friday blocking U.S. photonics firm HieFo Corp’s $3 million acquisition of assets from New Jersey-based aerospace and defense specialist Emcore, citing national security and China-related concerns. The order, released by the White House, declared the transaction “prohibited” and demanded HieFo divest all interests in the Emcore assets within 180 days.
According to the White House, HieFo was “controlled by a citizen of the People’s Republic of China,” and its 2024 acquisition of Emcore’s businesses led the president to believe it may “take action that threatens to impair the national security of the United States.” The order did not name the individual or detail Trump’s specific concerns, but the Treasury Department confirmed that the Committee on Foreign Investment in the United States had identified a national security risk in its investigation of the deal.
HieFo and Emcore have not publicly responded to the order. Emcore, which was publicly traded at the time of the deal and later taken private, stated that HieFo acquired its chips business and indium-phosphide wafer-fabrication operations for $2.92 million. HieFo, co-founded by Genzao Zhang — a former Emcore vice president of engineering — and Harry Moore — a former senior sales director at Emcore — described the acquisition as a strategic move to strengthen its semiconductor capabilities.
This action marks a significant escalation in U.S. policy toward foreign ownership of critical technology assets. Semiconductor manufacturing and chip design are foundational to national defense, artificial intelligence, and global digital infrastructure. The U.S. government has increasingly scrutinized foreign investments in these sectors, particularly those involving China, under the broader framework of “strategic competition.”
Similar executive actions have been taken in the past, including the blocking of other semiconductor-related acquisitions. For example, in 2022, the U.S. government halted a $1.4 billion acquisition of a chip company by a Chinese entity, citing national security concerns. The Trump administration’s approach has been characterized by swift, high-profile interventions to prevent what it deems as potential threats to U.S. technological sovereignty.
For U.S. chipmakers and investors, this order signals a new era of heightened regulatory scrutiny. Companies seeking to acquire or partner with foreign entities — especially those with ties to China — must now navigate a more complex and hostile regulatory environment. The decision also underscores the broader geopolitical tensions between the U.S. and China, where technology is increasingly weaponized as a tool of national strategy.
Industry analysts warn that such interventions may stifle innovation by deterring foreign investment and limiting access to critical technologies. However, supporters argue that protecting domestic supply chains and preventing the transfer of sensitive technologies to adversarial nations is essential to national security.
The move may also have implications for the broader semiconductor industry. With global chip supply chains already under strain, the U.S. government’s willingness to block deals — even those involving relatively small transactions — could deter future investments and complicate efforts to build a resilient domestic manufacturing base.
As the 180-day divestment deadline approaches, HieFo faces a critical decision: comply with the order or risk further legal and financial consequences. The company’s silence suggests it may be weighing its options carefully, potentially seeking legal counsel or diplomatic channels to challenge the order.
For now, the decision reinforces a pattern of U.S. policy that prioritizes national security over market efficiency — a trend that is likely to continue under future administrations. The semiconductor industry, already grappling with supply chain disruptions and geopolitical tensions, must now adapt to a new reality of heightened scrutiny and intervention.
Read more about U.S. semiconductor policy and foreign investment restrictions at Reuters and Wired.
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