President Donald Trump on Friday blocked US photonics firm HieFo Corp’s $3 million acquisition of assets in New Jersey-based aerospace and defense specialist Emcore, citing national security and China-related concerns.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.”For all the latest headlines, follow our Google News channel online or via the app.The order did not name the individual or detail Trump’s concerns.“The Transaction is hereby prohibited,” Trump said, ordering HieFo to “divest all interests and rights in the Emcore Assets, wherever located,” within 180 days.The Committee on Foreign Investment in the United States identified a national security ⁠risk in its investigation ‌of the deal, the Treasury ⁠Department said after ‍Trump’s