Trump blocks HieFo chip deal with Emcore over security concerns

• Trump halts HieFo's $2.92M Emcore chip asset purchase due to security concerns.
• HieFo must divest Emcore assets within 180 days unless granted more time
• Move targets Chinese access to US semiconductor technology

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President Donald Trump is blocking HieFo Corp. from acquiring semiconductor-related assets from Emcore Corp., citing national security reasons.

The order, released Friday, notes that HieFo, a Delaware-based company, was organized and is controlled by a Chinese citizen and targets the firm’s acquisition of “assets comprising the digital chips and related wafer design, fabrication, and processing businesses of” Emcore.

The companies in 2024 announced that they had completed a deal to sell New Jersey-based Emcore’s chips business and indium phosphide wafer fabrication operations for $2.92 million.

Trump’s order says that deal “threatens to impair the national security of the United States,” the latest move by the administration aimed at cracking down on Chinese access to advanced semiconductor technologies.