2 U.S. Code § 2184
2 U.S. Code § 2184 is about Purchase of furniture or carpets for House or Senate. It is under Subchapter VIII (Miscellaneous) of Chapter 30 (Operation and Maintenance of Capitol Complex) of Title 2 (The Congress) of the Code.
No furniture or carpets for either House shall be purchased without the written order of the chairman of the Committee on Rules and Administration, for the Senate, or without the written order of the chairman of the Committee on House Oversight of the House of Representatives, for the House of Representatives.