The Federal Social Security Act, which may be regarded as the central core of the social security program, is an omnibus act, containing the following features: (1) a national, compulsory oldage insurance plan, covering all employees except certain exempted groups; (2) two measures designed to stimulate the states to enact state unemployment compensation laws, namely, (a) a uniform nation-wide tax upon employers, against which a credit is allowable for contributions made to approved state unemployment compensation plans, and (b) subsidies to the states to cover the administrative costs of unemployment compensation; and (3) grants-in-aid to the states for old-age assistance, pensions for the blind, aid to dependent children, child welfare, maternal and child health, vocational rehabilitation, and public health activities. It is estimated that each of the two forms of social insurance will apply to about 25,000,000 wage-earners, and, when the maximum rates become effective in 1949, will involve annual contributions of nearly $3,000,000,000. This amount is approximately equal to the normal annual expenditure of the federal government prior to 1930. In addition, the grants-in-aid to the states were estimated by the actuaries of the President's Committee on Economic Security to reach a total of a half-billion dollars annually within a few years.History of the Federal ActWhen, in a message to Congress on June 8, 1934, the President indicated that he would submit a program of social insurance for consideration at the following session, the Wagner-Lewis unemployment insurance bill and the Dill-Connery old-age assistance bill were pending. Shortly afterwards, the President, by executive order, created the Committee on Economic Security, consisting of the Secretaries of Labor (chairman), Treasury, and Agriculture, the Attorney-General, and the Federal Emergency Relief Administrator. This committee appointed Professor Edwin E. Witte, of the University of Wisconsin, as executive director, and proceeded to build up a staff of actuaries and experts to study the whole problem of economic insecurity, and to prepare recommendations.