Morton H. Halperin is the Director of U.S. Advocacy for the Open Society Institute. Halperin oversees all policy advocacy on U.S. and international issues, including promotion of human rights and support for open societies abroad.

Halperin has a distinguished career in federal government, having served in the Clinton , Nixon and Johnson administrations. In the Clinton administration, Halperin was Director of the Policy Planning Staff at the Department of State (1998-2001), the Special Assistant to the President and Senior Director for Democracy at the National Security Council (1994-1996), and consultant to the Secretary of Defense and the Under Secretary of Defense for Policy (1993). He was nominated by the President for the position of Assistant Secretary of Defense for Democracy and Peacekeeping. During the first nine months of the Nixon administration, Halperin was a Senior Staff member of the National Security Council staff with responsibility for National Security Planning (1969). In the Johnson Administration, Halperin worked in the Department of Defense where he served as Deputy Assistant Secretary of Defense (international Security Affairs), responsible for political-military planning and arms control (1966-1969).

Halperin also has a long record as a Washington advocate on national and international issues. He spent many years at the American Civil Liberties Union, serving as the Director of the Washington Office from 1984 to 1992, where he was responsible for the national legislative program as well as the activities of the ACLU Foundation based in the Washington Office. Halperin also served as the Director of the Center for National Security Studies from 1975 to 1992, where he focused on issues affecting both civil liberties and national security.

Halperin has been associated with a number of think tanks and universities including Harvard University where he taught for six years (1960-66) and the Council on Foreign Relations. He has been widely published in newspapers and magazines across the world, and has authored, coauthored and edited more than a dozen books.

The recipient of numerous awards, Halperin also serves as Senior Fellow at the Center for American Progress. He is Chairman of the Board of the Democracy Coalition Project. He is also the Chairman of the Board of the Health Privacy Project at Georgetown University. He serves on the boards of DATA and The Constitution Project, and is the chair of the Advisory Board of the Center for National Security Studies.

Halperin holds a Ph.D. in International Relations from Yale University . He received his B.A. from Columbia College.