Medgar Wiley Evers Congressional Gold Medal Act - Directs the Speaker of the House of Representatives and the President pro tempore of the Senate to arrange for the posthumous presentation of a congressional gold medal in commemoration of Medgar Wiley Evers, in recognition of his contributions and sacrifice in the fight for racial equality in the United States. Requires the medal, following its award, to be given to the Mississippi Civil Rights Museum, where it is to be available for display or temporary loan to be displayed elsewhere.