31 U.S.C. § 329

1. (a)
   1. (1)The Secretary of the Treasury and the Treasurer may not—
      1. (A)be involved in trade or commerce;
      2. (B)own any part of a vessel (except a pleasure vessel);
      3. (C)buy or hold as a beneficiary in trust public property;
      4. (D)be involved in buying or disposing of obligations of a State or the United States Government; and
      5. (E)personally take or use a benefit gained from conducting business of the Department of the Treasury except as authorized by law.
   2. (2)An officer violating this subsection shall be fined $3,000, removed from office, and thereafter may not hold an office of the Government.
   3. (3)An individual (except prosecutors) giving information leading to the prosecution and conviction of an individual violating this subsection shall receive $1,500 of the fine when paid.
2. (b)
   1. (1)An officer or employee of the Department (except the Secretary or Treasurer) may not—
      1. (A)carry on a trade or business in the funds, debts, or property of a State or the Government; and
      2. (B)personally use a benefit gained from conducting business of the Department.
   2. (2)An officer or employee violating this subsection shall be fined $500 and removed from office.