US Code
Part D— Miscellaneous
§ 2133. Acceptance and supervision of works of fine arts

The Joint Committee on the Library, whenever, in their judgment, it is expedient, are authorized to accept any work of the fine arts, on behalf of Congress, which may be offered, and to assign the same such place in the Capitol as they may deem suitable, and shall have the supervision of all works of art that may be placed in the Capitol.