Tex. Finance Code § 36.214

(a) The receiver may request the court ex parte to issue a subpoena to compel the attendance and testimony of a witness before the receiver and the production of a record relating to the receivership estate. For this purpose the receiver or the receiver's designated representative may administer an oath or affirmation, examine a witness, or receive evidence. The court has statewide subpoena power and may compel attendance and production of a record before the receiver at the bank, the office of the receiver, or another location.

(b) A person served with a subpoena under this section may file a motion with the court for a protective order as provided by Rule 166b, Texas Rules of Civil Procedure. In a case of disobedience of a subpoena or the contumacy of a witness appearing before the receiver or the receiver's designated representative, the receiver may request and the court may issue an order requiring the person subpoenaed to obey the subpoena, give evidence, or produce a record relating to the matter in question.

(c) A witness who is required to appear before the receiver is entitled to receive:

(1) reimbursement for mileage, in the amount for travel by a state employee, for traveling to or returning from a proceeding that is more than 25 miles from the witness's residence; and

(2) a fee for each day or part of a day the witness is necessarily present as a witness in an amount set by the receiver with the approval of the court of not less than $10 a day and not more than an amount equal to the per diem travel allowance of a state employee.

(d) A payment of fees under Subsection (c) is an administrative expense.

(e) The receiver may serve the subpoena or have it served by the receiver's authorized agent, a sheriff, or a constable. The sheriff's or constable's fee for serving a subpoena must be the same as the fee paid the sheriff or constable for similar services.

(f) A subpoena issued under this section to a financial institution is not subject to Section 59.006.

(g) On certification by the receiver under official seal, a record produced or testimony taken as provided by this section and held by the receiver is admissible in evidence in any case without proof of its correctness or other proof, except the certificate of the receiver that the record or testimony was received from the person producing the record or testifying. The certified record or a certified copy of the record is prima facie evidence of the facts it contains. This section does not limit another provision of this subchapter, Subchapter D, or another law that provides for the admission of evidence or its evidentiary value.