; or (2) in the case of vacancies in both positions, an Architect has been appointed under section 2(a) of this Act. (c) Authority An officer serving as acting Architect under subsection (a) or (b) shall perform all the duties and exercise all the authorities of the Architect, including the authority to delegate the duties and authorities of the Architect in accordance with the matter under the heading Office of the Architect of the Capitol under the heading Architect of the Capitol of the Legislative Appropriation Act, 1956 ( 2 U.S.C. 1803 ). (d) Conforming amendment The matter under the heading Salaries under the heading Office of the Architect of the Capitol under the heading Architect of the Capitol of the Legislative Branch Appropriation Act, 1971 ( 2 U.S.C. 1804 ) is amended by striking : Provided , and all that follows through no Architect .