The Social Security Act has been amended by the Congress of the United States so as to permit political subdivisions of the several states to extend to their employees and officers the benefits of old age and survivors’ insurance, and that the Legislature of the State of Washington has enacted a statute designated as Chapter 184, Laws of 1951, which enables the political subdivisions of the state of Washington to take all action necessary to effectuate the coverage of their employees and officers under the old age and survivors’ insurance system, and that it is advisable and desirable that participation in this system of coverage be afforded the eligible employees and officers of the city, and that payment by the city of its portion of the cost of the coverage in a payment for a municipal purpose. (Ord. 313, 1951)