; (2) the term Member of Congress means an individual serving in a position under subparagraph (A), (B), or (C) of section 601(a) of the Legislative Reorganization Act of 1946 ( 2 U.S.C. 4501 ); (3) the payroll administrator of a House of Congress means— (A) in the case of the House of Representatives, the Chief Administrative Officer of the House of Representatives, or an employee of the Office of the Chief Administrative Officer who is designated by the Chief Administrative Officer to carry out this Act; and (B) in the case of the Senate, the Secretary of the Senate, or an employee of the Office of the Secretary of the Senate who is designated by the Secretary to carry out this Act; and (4) the term reserve components means the components named in section 10101 of title 10, United States Code.