From its earliest decisions in the 1790s, the U.S. Supreme Court has used international law to help resolve major legal controversies. This book presents a comprehensive account of the Supreme Court's use of international law from the Court's inception to the present day. Addressing treaties, the direct application of customary international law, and the use of international law as an interpretive tool, the book examines all the cases or lines of cases in which international law has played a material role, showing how the Court's treatment of international law both changed and remained...