41 U.S.C. § 6306: Prohibition on Members of Congress making contracts with Federal Government

(a) In General.—A Member of Congress may not enter into or benefit from a contract or agreement or any part of a contract or agreement with the Federal Government. (b) Exemptions.—(1) In general.—Subsection (a) does not apply to contracts that the Secretary of Agriculture may enter into with farmers. (2) Certain acts.—Subsection (a) does not apply to a contract entered into under—(A) the Agricultural Adjustment Act (7 U.S.C. 601 et seq.); (B) the Farm Credit Act of 1971 (12 U.S.C. 2001 et seq.); or (C) the Home Owners’ Loan Act (12 U.S.C. 1461 et seq.). (3) Public record.—An exemption under this subsection shall be made a matter of public record.