As momentum builds in the United States for landmark antitrust legislation and lawsuits on Big Tech companies, potential changes to U.S. mergers law and limits on growth avenues for large tech firms like Google could impact U.S. dominance in the global tech space, increasing competition with Chinese and European firms. On Feb. 4, U.S. Senator Amy Klobuchar, the new chair of the Senate’s Subcommittee on Antitrust, Competition Policy and Consumer Rights, introduced a new bill aimed at updating the United States’ antitrust laws. The so-called Competition and Antitrust Law Enforcement Reform Act (CALERA) proposes giving more resources to antitrust investigators, as well as rewriting the way that mergers and acquisitions (M&As) are reviewed over antitrust concerns. Although it has not yet been presented to U.S. President Joe Biden, the draft bill does give hints about how the new Democratic-led government could treat antitrust law reforms and tackle Big Tech....