Assistant professor department economics George Mason University, Fairfax, Virginia, 1977-1978. Research economist Bureau Economics Federal Trade Commission, Washington, 1979-1983. Economic advisor to commissioners Consumer Product Safety Commission, 1983-1984, acting executive director, assistant to director, 1984.
President Economic Education for Clergy, Inc., Bethesda, Maryland, 1985-1986. Executive assistant to chairman International Trade Commission, Washington, 1986-1987. Deputy director Bureau Consumer Protection Federal Trade Commission, 1987-1989.
Director office of industries United States International Trade Commission, 1989-1992, director operations, since 1992. Adjunct professor George Mason University, since 1997. Instructor University Virginia, 1976-1977.
Economic researcher American Enterprise Institute, 1976. Economic research analyst Economic Policy Office, United States Department Justice, 1974-1975. Adjunct professor George Mason University, since 1997.
Presenter in field.