Core Viewpoint - President Trump signed an executive order blocking the semiconductor deal between HieFo Corp. and Emcore Corp. due to national security concerns related to China [1][5] Group 1: Executive Order Details - The executive order requires HieFo to divest all interests and rights in Emcore's assets within 180 days [2] - The Committee on Foreign Investment in the United States (CFIUS) will oversee the enforcement of this order [2] Group 2: Context and Background - This action is part of a broader strategy by the U.S. government to limit Chinese access to advanced semiconductor technologies [2][5] - CFIUS has a history of recommending the blocking of acquisitions based on national security concerns, as seen in the case of Lattice Semiconductor in 2017 [3] Group 3: Related Legislative Actions - U.S. lawmakers are working on legislation to restrict the Trump administration from allowing China access to advanced AI chips from companies like Nvidia and AMD for the next 2.5 years [4]