2 U.S. Code § 1813
2 U.S. Code § 1813 is about Exterior of Capitol. It is under Subchapter II (General Powers and Duties) of Chapter 28 (Architect of the Capitol) of Title 2 (The Congress) of the Code.
On and after July 7, 1884, it shall be the duty of the Architect to clean and keep in proper order the exterior of the Capitol.