7 C.F.R. § 1.212
(b) No employee may provide official information or testimony relating to official information in response to a demand unless authorized by the Department in accordance with this subpart. See United States ex rel. Touhy v. Ragen, 340 U.S. 462 (1951). An employee who fails to comply with this regulation may be subject to disciplinary action up to and including removal.
Responsibilities if Making a Demand