Congressional hearings and investigations represent the formal mechanism by which the people's branch asserts its power and fulfills its constitutional duty. From the structural rules that govern testimony to the coercive power of contempt citations, the process is designed to ensure accountability and inform legislation. While the public often sees only the high-drama moments of a televised hearing, the substantive work occurs behind the scenes in depositions, document reviews, and staff negotiations. Whether you are an agency official, a private-sector executive, an advocate, or a student of government, mastering the procedural and strategic realities of this process is essential for effective participation in the American political system. The gavel falls, but the work of oversight is never truly finished. It is the engine that keeps a complex republic accountable to its citizens. Understanding how that engine runs is the first step toward engaging with it effectively.