Since his election in 2018, Senator Josh Hawley has distinguished himself by his broad-ranging criticism of Big Tech. In his new book, The Tyranny of Big Tech, he attempts to revive the spirit of trust-busting exemplified by Teddy Roosevelt against the companies he identifies as modern-day robber barons. While it falls short as an analysis of present-day American monopoly policy, the Missouri senator’s latest book constitutes a spirited, even landmark, political statement and call-to-arms for a deeper shift towards vigorous republicanism in the American conservative movement.