Who represents litigants in the Supreme Court of the United States? Kevin T. McGuire shows that the most sophisticated of them have the advantage of representation by an elite counsel made up of former clerks to the justices, alumni of the Office of the Solicitor General, partners in powerful Washington law firms, and public interest lawyers, all of whom serve as gatekeepers to the Court. In this study, the first to characterize the bar of the Supreme Court as a whole, McGuire uses survey, archival, and interview data to explore the history and social structure of the community of Supreme Court specialists. In so doing, he assesses the strategic politics of Supreme Court practice, the ways in which dominant litigators can shape the Court's decisions, and what the existence of such an elite implies for judicial fairness.