The United States needs a Defender General—a public official charged with representing the collective interests of criminal defendants before the Supreme Court of the United States. The Supreme Court is effectively our nation’s chief regulator of criminal justice. But in the battle to influence the Court’s rulemaking, government interests have substantial structural advantages. As compared to counsel for defendants, government lawyers—and particularly those from the U.S. Solicitor General’s Office—tend to be more experienced advocates who have more credibility with the Court. Most importantly, government lawyers can act strategically to play for bigger long-term victories, while defense lawyers must zealously advocate for the interests of their clients—even when they conflict with the collective interests of defendants. The prosecution’s advantages likely distort the law on the margins.