Omnibus Appropriations Act, 2009…
“ Transfer of Funds.— Subject to the approval of the Joint Committee on the Library and the Committees on Appropriations of the House of Representatives and the Senate, the Architect of the Capitol and the Librarian of Congress may transfer between themselves appropriations or other available funds to pay the costs incurred in acquiring real property pursuant to the authority of this section and the costs of necessary expenses incurred in connection with the acquisition of the property. ”
