Section, Pub. L. 95–391, title I, § 109, Sept. 30, 1978, 92 Stat. 773; Pub. L. 96–304, title I, § 107(c), July 8, 1980, 94 Stat. 890, provided for merit compensation for employees rated as outstanding and exceptional by Secretary of Senate and Sergeant at Arms and Doorkeeper, respectively.