The Treaty Power and Foreign Affairs are crucial aspects of U.S. constitutional law. They define how the federal government engages with other nations and balances international obligations with domestic concerns. This unit explores the legal framework and historical development of these powers. Key topics include the treaty-making process, executive agreements, and the tension between federal authority and state sovereignty in foreign affairs. Notable cases like Missouri v. Holland and Medellin v. Texas have shaped our understanding of these complex issues.