7 Tex. Admin. Code § 9.18
On the administrative law judge's own motion or on the written request of a party to a contested case pending before one of the finance commission agencies, the administrative law judge may issue a subpoena addressed to the sheriff or to a constable to require the attendance of a witness or the production of books, records, papers, or other objects that may be necessary and proper for the purposes of a proceeding if:
Source Note:The provisions of this §9.18 adopted to be effective August 28, 2008, 33 TexReg 6809.