https://www.reuters.com/article/us-qualcomm-m-a-broadcom/u-s-sees-national-security-risk-from-broadcoms-qualcomm-deal-treasury-idUSKCN1GI1S8 >A U.S. government national security panel said it identified potential risks that warrant a full investigation of Singapore-based Broadcom Ltd's $117 billion bid for chipmaker Qualcomm Inc , a senior U.S. Treasury official said in a letter to the companies on Monday.