Social Security Administration
The Social Security Administration manages the Nation's social insurance program--consisting of retirement, survivors, and disability insurance programs--commonly known as Social Security; administers the Supplemental Security Income program for the aged, blind, and disabled; assigns Social Security numbers to U.S. citizens; and maintains earnings records for workers under their Social Security numbers.
The Social Security Administration (SSA) was established by Reorganization Plan No. 2 of 1946 (5 U.S.C. app.), effective July 16, 1946. It became an independent agency in the executive branch by the Social Security Independence and Program Improvements Act of 1994 (42 U.S.C. 901), effective March 31, 1995.