https://www.reuters.com/article/us-qualcomm-m-a-broadcom-exclusive/exclusive-secretive-u-s-security-panel-discussing-broadcoms-qualcomm-bid-sources-idUSKCN1GB09V >A national security panel that can stop mergers that could harm U.S. security has begun looking at Singapore-based chipmaker Broadcom Ltd's plan to take over rival Qualcomm Inc, according to three sources familiar with the matter.