Fellow
Johns Hopkins University Center for Study of American Government
Visiting Professor
Peking University School of Law
Fellow
University of California Santa Barbara Bren School of Environmental Science and Management Program on Governance for Sustainable Development
Visiting Senior Fellow
Tsinghua University US/China Center
Commissioner
U.S. Occupational Safety and Health Review Commission
Executive Director
Presidential Advisory Committee on Human Radiation Experiments
Special Counsel to Senator David Pryor
Subcommittee on Federal Services
U.S .Senate
Foreign Expert
UNDP China environment program
Professor
Tianjin University law school
Of counsel
Guttman, Buschner & Brooks
Adjunct Professor
Fudan U/London School of Economics Institute for Global Public Policy