Cohen is a senior adviser to Experience Corps, a senior fellow at Civic Ventures, and the president of Global Integrity. He is a Co-Founder of the Advocacy Institute and pioneered the Institute's work in its international capacity building programs, where he facilitated workshop and strategy sessions. From 1984 to 1992, Cohen led the Professionals' Coalition for Nuclear Arms Control to stop the U.S. nuclear arms build-up by supporting arms control agreements and reducing the military budget. He previously served as president of Common Cause, the largest voluntary membership organization in the United States working on government accountability issues.
In 2009 listed members of the JStreet advisory council included David Cohen, Co-Founder, Advocacy Institute, President, Global Integrity and former President, Common Cause
David Cohen is the Senior Congressional Fellow at the Council for a Livable World where his work focuses on providing legislative analysis and strategic advice on Congressional affairs. As at March 12, 2010, David Cohen served on the Experience Corps and was one of the staff on the board of the Council for a Livable World. The Council was founded in 1962 by nuclear physicist Leo Szilard and other scientists. Its purpose is to campaign against the proliferation of nuclear weapons through lobbying and by supporting candidates who share their vision.