B. Cowles, Willard Keywords: Federal states | Public international law | United States of America | Mots clefs: Etats fédéraux | Droit international public | Etats-Unis d’Amérique | ABSTRACT Willard B. Cowles devotes his course to the way in which International law is applied between subdivisions of federations. After a general part of his study focusing on ancient Greece and Rome, the American Indian tribes, the Swiss Cantons, and Germany, the author offers an in-depth examination of the position of the United States of Am…