In February 2019, Booker was one of eight senators to sign a letter to the Federal Communications Commission and Department of Justice advocating for regulators to renounce a proposed $26 billion merger between T-Mobile and Sprint, writing that American enforcers have understood for the last thirty years "that fostering robust competition in telecommunications markets is the best way to provide every American with access to high-quality, cutting-edge communications at a reasonable price" and the merger would result in a return for "Americans to the dark days of heavily consolidated markets and less competition, with all of the resulting harms."
