The Sherman Antitrust Act, passed in 1890, was effectively dead. America’s antitrust laws simply are not built for these technologies and economic sectors. Roosevelt and his successor, William Howard Taft, launched a bevy of antitrust cases, breaking apart railroad, cigarette, and energy companies. Eventually, the lack of large antitrust cases gave way to smaller cases filled with minutiae. Congress should pass a new version of the Expediting Act and make antitrust fast again.