origins and legislative development of the U.S. Social Security program. Focusing on the contributory social insurance program introduced in title II of the Social Security Act of 1935, the article traces the major amendments to the original program and provides an up-to-date description of the major provisions of the system. The article concludes with a brief overview of the debate over the future of the program, and it provides a summary assessment of the impact and importance of Social Security as a central pillar of the U.S. social welfare system.
