2 U.S. Code § 1811
2 U.S. Code § 1811 is about Powers and duties. It is under Subchapter II (General Powers and Duties) of Chapter 28 (Architect of the Capitol) of Title 2 (The Congress) of the Code.
The Architect of the Capitol shall perform all the duties relative to the Capitol Building performed prior to August 15, 1876, by the Commissioner of Public Buildings and Grounds: Provided, That no change in the architectural features of the Capitol Building or in the landscape features of the Capitol Grounds shall be made except on plans to be approved by Congress.
