On March 12, 2018, the U.S. government blocked Broadcom Inc.’s proposed merger with Qualcomm Inc. on the grounds of national security. The presumption was that the merger of the two chipmakers would have resulted in a third company, China’s Huawei Technologies Co. Ltd., gaining a dominant position in the market for 5G mobile network technologies. Huawei is a “national champion” — a company that is heavily subsidized (either implicitly or explicitly) or, in some cases, owned by a government — and the U.S. government is concerned that its growth could provide the Chinese government with undue access to and control over U.S. communication networks.