When he joined UC College of Law as dean and Nippert professor in 1979, Professor Christenson brought a rich background of scholarship and experience to Cincinnati. In the late 70s, he held the Charles H. Stockton Chair of International Law at the U.S. Naval War College. Earlier, he was dean and professor of law at the Washington College of Law at American University.

 In 1985, Professor Christenson was appointed university professor of law at UC. He has taught at six major law schools, including most recently at the University of Hawaii where he held the Wallace S. Fujiyama Distinguished Visiting Professorship in 1997.

 Professor Christenson has held posts with the Office of the Legal Adviser of the U.S. Department of State and as assistant general counsel for science and technology at the U.S. Department of Commerce. He is a member of the Board of Editors of the Human Rights Quarterly, trustee of the Procedural Aspects of International Law Institute, a trustee of the Glenn M. Weaver Institute of Law and Psychiatry, a member of the American Society of International Law, and a fellow of the Graduate School of the University of Cincinnati.

Publications

Scholarship and Teaching After 175 Years, 76 University of Cincinnati Law Review 1-16 (2007).

A Tale of Two Lawyers in Antebellum Cincinnati: Timothy Walker's Last Conversation with Salmon P.Chase, 71 Univeristy of Cincinnati Law Review 457-92 (2002). Manuscript Available (pdf)

Federal Courts and World Civil Society, 6 Journal of Transnational Law and Policy 405-516 (supplement 1997).

Looking Back "In Pursuit of the Art of Law," Discussion of G. A. Christenson, 21 American University Law Review 629-35 (1972), 45 American University Law Review 1015-25 (1996).

Customary International Human Rights Law in Domestic Court Decisions, 25 Georgia Journal of International and Comparative Law 225-54 (1996).

Chapter XIV, State Responsibility and the UN Compensation Commission: Compensating Victims of Crimes of State, in The United Nations Compensation Commission (Richard B. Lillich, editor, Transnational Press, 1995).

Chapter 10, New Orthodoxy in Conditions on Artistic and Intellectual Expression, in Free Expression, Public Support and Censorship: Examining Government's Role in the Arts in Canada and the US (Michael Margolis, editor, University Press of America, 1994).

Thinking Things, Not Words: Irvin Rutter's Pragmatic Jurisprudence of Teaching, 61 University of Cincinnati Law Review 1281-1302 (1993).