In the gap between moral conviction and legal architecture, New York Mayor Zohran Mamdani discovered what international law scholars already knew: a city cannot reach across the boundaries of sovereignty, treaty membership, and congressional statute to enforce a warrant issued by a court the United States has never joined. The International Criminal Court's 2024 arrest warrant for Israeli Prime Minister Benjamin Netanyahu exists on American soil as a kind of legal ghost — visible, contested, and entirely unenforceable. What began as a striking political gesture ended in a quiet acknowledgment