12 C.F.R. § 308.34 – Hearing subpoenas.

(a) Issuance.
1. (1) Upon application of a party showing general relevance and reasonableness of scope of the testimony or other evidence sought, the ALJ may issue a subpoena or a subpoena duces tecum requiring the attendance of a witness at the hearing or the production of documentary or physical evidence at the hearing. The application for a hearing subpoena must also contain a proposed subpoena specifying the attendance of a witness or the production of evidence from any state, territory, or possession of the United States, the District of Columbia, or as otherwise provided by law at any designated place where the hearing is being conducted. The party making the application must serve a copy of the application and the proposed subpoena on every other party.
2. (2) A party may apply for a hearing subpoena at any time before the commencement of a hearing. During a hearing, a party may make an application for a subpoena orally on the record before the ALJ.
3. (3) The ALJ will promptly issue any hearing subpoena requested pursuant to this section. If the ALJ determines that the application does not set forth a valid basis for the issuance of the subpoena, or that any of its terms are unreasonable, oppressive, excessive in scope, or unduly burdensome, the ALJ may refuse to issue the subpoena or may issue it in a modified form upon any conditions consistent with this subpart. Upon issuance by the ALJ, the party making the application must serve the subpoena on the person named in the subpoena and on each party.
(b) Motion to quash or modify.
1. (1) Any person to whom a hearing subpoena is directed or any party may file a motion to quash or modify the subpoena, accompanied by a statement of the basis for quashing or modifying the subpoena. The movant must serve the motion on each party and on the person named in the subpoena. Any party may respond to the motion within ten days of service of the motion.
2. (2) Any motion to quash or modify a hearing subpoena must be filed prior to the time specified in the subpoena for compliance but not more than ten days after the date of service of the subpoena upon the movant.
(c) Enforcing subpoenas. If a subpoenaed person fails to comply with any subpoena issued pursuant to this section or any order of the ALJ which directs compliance with all or any portion of a document subpoena, the subpoenaing party or any other aggrieved party may seek enforcement of the subpoena pursuant to § 308.26(c).