Before joining the faculty, Bush served in the Army, earning a Bronze Star for Meritorious Service in Vietnam (1969-70). He practiced as a litigation attorney for six years at the Tennessee Valley Authority.
During his twenty years on the faculty (1981-2001), he taught many subjects, including Civil Procedure, Labor Law, Employment Law, Comparative Law and International Law. He served two terms as Associate Dean and was the Interim Dean from February 1989 until July 1990. He founded the Cambridge Summer Session and was its director for 18 years. He served many years on the Faculty Senate and was its Chair at the end of his term at the University. He taught an introductory law course to undergraduates at Jackson State University, served a number of years on the board of the Mississippi ACLU and was its President in 2001. He spent a sabbatical year (1991-92) as a Fulbright Lecturer at the Law Faculty of the University of Bucharest, Romania, and he was a Visiting Professor at Cornell University Law School during the Spring 1999 semester. He organized conferences on international law, chiefly labor rights, in Romania and Thailand, for the U.S. Labor and State Departments, respectively.
Bush retired from the faculty in 2001. He was subsequently appointed to a newly-created position at Cornell University Law School—Executive Director of the Clarke Center for International and Comparative Legal Studies. He held this post for just over ten years, retiring in July 2012.
He and his wife, Marilyn, now live in north-central Vermont.