Raskin became the secretary for the Liberal Project, a group of House liberals, organized by Kastenmeier and Roosevelt into a liberal leadership group; then in 1961, he became United States National Security Advisor McGeorge Bundy's assistant.
Raskin moved to Washington, D.C. in 1958, where he became a legislative counsel to a group of liberal congressmen, including Democrats Robert Kastenmeier from Wisconsin and James Roosevelt from California, the oldest son of Franklin D. Roosevelt. Raskin soon became the secretary for the Liberal Project, a group of House liberals, organized by Kastenmeier and Roosevelt into a liberal leadership group. In 1961, Raskin became McGeorge Bundy's assistant on national security affairs and disarmament as a member of the Special Staff of the National Security Council. 
