Current:
District of Columbia Bar
(since 1978).
Bars of the U.S. District Courts for the Districts of Columbia and Maryland (Trial Bar);
the U.S. Courts of Appeals for the Second, Third, Fourth, Fifth, Sixth, Seventh, Ninth, Tenth, Eleventh, Federal, and D.C. Circuits; the U.S. Court of International Trade;
the U.S. Court of Federal Claims;
and the U.S. Supreme Court.
American Bar Association
(since 1978)
(Sections of Litigation and International Law and Practice).
ABA Death Penalty Representation Project,
Steering Committee, 2009-14
(Chair, 2012-14).
American Branch, International Law Association
(since 2006)
(Executive Council, 2014-).
American Society of International Law
(since 1976)
(Board of Review and Development, 1987-1992;
Committee on the Annual Meeting, 1990 and 1999;
Committee on the Honorary Member, 2000);
International Refugee Law Interest Group (Co-Chair, 2014-).
Beacon House Community Ministry, Inc.,
Board of Directors, 2003-
(Treasurer, 2006- ).
British-American Project,
Fellow, 1987-
(Executive Committee, 2001-05;
Co-Chair, Annual Conference, 2002;
U.S. Chair, Executive Committee, 2003-05).
Center for Justice and Accountability,
Legal Advisory Council, 2002-2009, 2011- .
Council for Court Excellence,
Board of Directors, 2004- .
International Law Students Association,
Board of Directors, 1995-2003, 2004-2010, 2011-
(Founding Chair, 1995-2001;
Treasurer, 2001-03, 2012-2014;
Chair, 2014-).
International Bar Association
(since 2011).
Yale Club of Washington
(since 1980).
Past:
Archdiocesan Legal Network,
Advisory Board, 1989-2004
(Vice Chair, 2000-01;
Chair, 2001-03).
Human Rights and Human Welfare,
Editorial Advisory Board, 2002-05.
Institute of Linguists (London),
Associate member, qualified in Italian, 1973-75.
International Human Rights Law Group,
Board of Directors, 1983-97
(Chair, Litigation Committee, 1983-97;
Secretary-Treasurer, 1990-96;
Vice Chair for Programs, 1996-97).
Legal Counsel for the Elderly,
Policy Board and Executive Committee, Volunteer Lawyers Panel, 1982-87
(Vice Chairman, 1984-86;
Chairman, 1987).
United States Army School of the Americas (Fort Benning, Georgia),
Board of Visitors, 1996-2000
(Member, Human Rights Committee, 1998-2000).
Western Hemisphere Institute for Security Cooperation,
Board of Visitors, 2002-05
(Vice-Chair, 2002;
Chair, 2003-05)
(Member, Human Rights Working Group, 2001-05).