Texas Insurance Code - INS § 36.152. Subpoena Authority

(a) With respect to a matter that the commissioner has authority to consider or investigate, the commissioner may issue a subpoena applicable throughout the state that requires:

(b) In connection with a subpoena, the commissioner may require attendance and production of records before the commissioner or the commissioner's designee:

(c) In connection with a subpoena, the commissioner or the commissioner's designee may administer an oath, examine a witness, or receive evidence.

(d) The commissioner must personally sign and issue the subpoena.