An Act amending the act of June 22, 1931 (P. L. 844, No. 274), entitled, as amended, "An act authorizing the Commonwealth of Pennsylvania, or any department or division thereof, and counties, cities, boroughs, incorporated towns, townships, school districts, vocational school districts, and institution districts to make contracts of life, health, hospitalization, medical services, and accident policies for the benefit of employees thereof, *** and providing for the payment of the cost thereof," prohibiting discrimination among elected county officials.