Party affiliation: Democrat
Law clerk Massachusetts Supreme Judicial Court, Boston, 1975-1976. Law clerk to presiding justice Supreme Court of the United States Court, Washington, 1976-1977. Legal counsel President Science Adviser, 1977-1981.
Partner Covington & Burling, 1981-1999, senior of counsel, since 2004. Board directors Carnegie Institution Washington, 1992—2003, president, since 2003. Chairman United States Nuclear Regulatory Commission, 1999—2003.
Chairman committee assess safety and technical issues Department Energy reactors National Academy of Sciences, 1987—1988, chairman committee fuel economy automobiles and light trucks, 1991—1992, chairman committee declassification information Department Energy's environmental programs, 1994—1995. Chairman nuclear and radiation studies board NAS-National Academy of Engineering, 2004—2010. Co-chairman American Association for the Advancement of Science-American Bar Association National Conference Lawyers and Scientists, 1988—1994.
Member board overseers arts and science Tufts University, 1994—2002. Member advisory board Secretary Energy, 1996—1999. Board directors Universities Research Association, Inc., since 2004, Procter and Gamble&E Corporation, since 2006, Luminant Holding Company, 2008—2010.
Chairman international nuclear safety group International Atomic Energy Agency, since 2003. Member National Commission on Energy Policy, 2006—2010. Board overseers Harvard University, since 2007.
Member Blue Ribbon Commission American Nuclear Future, since 2010. Chairman committee on science, technical and law NAS-National Academy of Engineering, since 2010.
Fellow: American Association for the Advancement of Science (board directors 2000-2006, Abelson prize 2009), American Academy Arts and Sciences (council and executive committee since 2005), American Physical Society. Member: National Academy of Engineering, American Philosophical Society, Sigma Xi, Phi Beta Kappa.