Social Security Amendments of 1964. Supplemental Report Together with Individual Views of the Committee on Finance on H.R. 11865 to Increase Benefits Under the Federal Old-age, Survivors, and Disability Insurance System, to Provide Child's Insurance Benefits Beyond Age 18 While in School, to Provide Widow's Benefits at Age 60 on a Reduced Basis, to Provide Benefits for Certain Individuals Not Otherwise Eligible at Age 72, to Improve the Actuarial Status of the Trust Funds, to Extend Coverage, and for Other Purposes