12 C.F.R. § 612.2150
(a) General. If you are a System institution director or employee you must not act inconsistently with the Standards of Conduct core principles set forth in this subpart. You also must not act in the following manner:
(4) Purchase property owned by the institution. Do not knowingly purchase or otherwise acquire (directly or indirectly) any interest (including mineral interests) in any real or personal property that currently is owned, or within the past 12 months was owned, by your institution, your supervising institution, or institutions supervised by your institution as a result of foreclosure, deed in lieu, or similar action. The prohibition in this paragraph (a)(4) extends to property held or sold by a chartered service corporation or a System unincorporated business entity. The prohibition does not apply in the following situations:
(5) Enter into transactions with prohibited sources. Do not directly or indirectly borrow from, lend to, or become financially obligated with or on behalf of a director, employee, or agent of your institution, your supervising institution, or institution supervised by your institution. You are also prohibited from directly or indirectly borrowing, lending to, or becoming financially obligated with or on behalf of a borrower or loan applicant of your institution. The transaction prohibition does not apply to:
(6) Purchase System obligations. Do not purchase any obligation of a System institution, including any joint, consolidated or System-wide obligation, unless such obligation is part of an offering available to the public and you either purchase it through a dealer or dealer bank affiliated with a member of the selling group designated by the Funding Corporation or purchase it in the secondary markets.
(b) Employees only. In addition to the prohibitions under paragraph (a) of this section, if you are an institution employee you must not:
(1) Serve as a director or employee of certain entities. Do not serve as a director or employee of any commercial bank, savings and loan, or other non-System financial institution. You may not serve as a director or employee of a non-System entity that transacts business with a System institution within your institution's district unless specifically allowed in this paragraph (b). For the purpose of this paragraph (b)(1), “transacts business” does not include loans by a System institution to a family-owned entity or a reportable business entity; service on the board of directors of the Federal Agricultural Mortgage Corporation; transactions with non-profit entities; or transactions with entities in which the System institution has an ownership interest. The prohibition in this paragraph (b)(1) does not apply in the following situations:
(4) Serve as a joint employee. Do not serve as an employee for your supervising institution if you are an officer at your association. Do not serve as an employee for a supervised institution if you are an officer at your Farm Credit bank. The prohibition in this paragraph (b)(4) does not apply in the following situations: