2 U.S.C. § 1833: Lighting, heating, and ventilating House of Representatives

The electrician, together with everything pertaining to the electrical machinery and apparatus, and the ventilation and heating of the House of Representatives, and all laborers and others connected with the lighting, heating, and ventilating thereof, shall be subject exclusively to the orders, and in all respects under the direction, of the Architect of the Capitol, subject to the control of the Speaker; and no removal or appointment shall be made except with his approval. And all engineers and others who are engaged in heating and ventilating the House shall be subject to the orders, and in all respects under the direction, of the Architect of the Capitol, subject to the control of the Speaker; and no removal or appointment shall be made except with his approval.