• 1995-2016: Professor of Law, Saint Louis University, St. Louis, MO, USA. Has taught Criminal Law, Criminal Procedure, Comparative Law, Comparative Criminal Procedure, International Criminal Law, Anti-Terrorism and Criminal Enforcement. Supervised Criminal Clinic in St. Louis City Public Defender Office from 1995-2001.
  • From 2001-2013 was Co- Director, Center for International and Comparative Law.
  • From 2001-2013 was Director of the Summer Law Program in Madrid
  • 2001-2019: Visiting professor in Nishinomiya, Japan, Singapore, Bern, Switzerland, Rome, Italy, Paris, France, Istanbul, Turkey, Lisbon, Portugal, Chongqing, China, Szeged, Hungary, and Moscow, Russia,
  • 1994-1995: Research Fellowship. Max-Planck-Institute for Comparative and International Criminal Law, Freiburg, Germany. Research: Lay Participation in the Criminal Trial
  • 1993-1994: Liaison. Central and Eastern European Law Initiative of American Bar Association. Moscow, Russia. In charge of coordinating program of U.S. support for the Russian project reintroducing trial by jury and other projects in support of legal reform
  • 1992/1993: Fellow. International Research and Exchanges Board. Institute of State and Law. Russian Academy of Sciences. Moscow, Russia. Research into Criminal Justice and Court Reforms in Russia. Consultant in drafting of new Code of Criminal Procedure and legislation involving court organization, the bar, reintroduction of trial by jury with the Legislative Committee of the Supreme Soviet of the Russian Federation, the State Legal Agency of the Office of the President of the Russian Federation and the Ministry of Justice of the Russian Federation.
  • 1990/1991: Senior Fellow. International Institute of Higher Studies in Criminal Sciences. Siracusa, Italy. Research in International Criminal Law and Human Rights
  • 1988: Attorney Trainee, European Commission of Human Rights, Strasbourg, France
  • 1987/1988: Fulbright Senior Professor Award. Institute of Criminal Law and Procedure. Freie Universität, Berlin.
  • 1976-1987 Assistant Public Defender. Alameda County, California. USA. Criminal defense lawyer for the indigent. Handled thousands of cases, including 58 before a jury (24 felonies, including 3 murders, one of which involved the death penalty. Jan. 1984-Jul. Chief Attorney for the Juvenile Division. Over l00 trials. 1985 Chief Public Prosecutor for the Juvenile Division. Over l00 proceedings.
  • 1980-1984 Lobbyist before Assembly Criminal Justice Committee of California State Legislature, Sacramento, California, for Alameda County Public Defenders Association concerning proposed criminal legislation