Recht der Vereinigten Staaten
Harper is a longtime member of the American Law Institute and was elected to the ALI Council in 1985. He served as the Institute's First Vice President from 2000 to 2004, and as Second Vice President from 1998 to 2000. He has served as an Adviser on several ALI law reform projects, including Recognition &amp; Enforcement of Foreign Judgments, and Transnational Rules of Civil Procedure. He currently serves as a Counselor on the Restatement Fourth, The Foreign Relations Law of the United States.