Pub. L. 113-235, div. E, tit. VI, sec. 603

Sec. 603. The expenditure of any appropriation under this Act for any consulting service through procurement contract pursuant to 5 U.S.C. 3109, shall be limited to those contracts where such expenditures are a matter of public record and available for public inspection, except where otherwise provided under existing law, or under existing Executive order issued pursuant to existing law.