34 C.F.R. § 8.4
(c)
(1) The Secretary may allow an employee to testify if the Secretary determines that the demand satisfies the requirements of § 8.3 and that granting permission—
(d) If a response to a demand for testimony is required before the Secretary determines whether to allow an employee to testify, the employee or counsel for the employee shall—
(e) If the court or other authority declines the request for a stay, or rules that the employee must comply with the demand regardless of the Secretary's instructions, the employee or counsel for the employee shall respectfully decline to comply with the demand, citing United States ex rel. Touhy v. Ragen, 340 U.S. 462 (1951), and the regulations in this part.
(Authority: 5 U.S.C. 301; 20 U.S.C. 3474)