The U.S. administration has blocked HieFo Corporation's acquisition of Emcore Corporation assets on national security grounds. The directive mandates HieFo to divest all stakes in Emcore's digital chip technology and associated proprietary assets within 180 days. The decision reflects broader concerns around critical technology transfer and supply chain security in sensitive sectors. Companies operating in cross-border tech and digital asset spaces should monitor similar regulatory actions, as such restrictions increasingly shape M&A strategies and investment frameworks across the technology industry.