Qualcomm had rebuffed Broadcom's $117 billion takeover bid, which was under investigation by the U.S. Committee on Foreign Investment in the United States (CFIUS), a multi-agency panel led by the U.S. Treasury Department that reviews the national security implications of acquisitions of U.S. corporations by foreign companies. "The proposed takeover of Qualcomm by the Purchaser (Broadcom) is prohibited, and any substantially equivalent merger, acquisition, or takeover, whether effected directly or indirectly, is also prohibited," the presidential order released on Monday said.