A bill to amend the Social Security Act to provide that the social security trust funds shall be invested in securities which provide a maximum return, consistent with safety.

Amends titles II (Old Age, Survivors and Disability Insurance) and XVIII (Medicare) of the Social Security Act to require that the Board of Trustees of the social security trust funds (the Federal Old-Age and Survivors Insurance Trust Fund, the Federal Disability Insurance Trust Fund, the Federal Hospital Insurance Trust Fund, and the Federal Supplementary Medical Insurance Trust Fund) make investments securing the maximum possible interest yield with the portion of the Trust Funds not required to meet current withdrawals. Revises the requirements for investments by the Trust Funds in federally guaranteed obligations and interest-bearing obligations of the United States.