Section 339.533 - Authority of commission, oaths and subpoenas1. The chairperson of the commission may administer oaths, issue subpoenas, and issue subpoenas duces tecum requiring the production of documents and records. Subpoenas and subpoenas duces tecum shall be served by a person authorized to serve subpoenas of courts of record. In lieu of requiring attendance of a person, controlling person, or other legal entity to produce original documents in response to a subpoena duces tecum, the commission may require sworn copies of such documents to be filed with it or delivered to its designated representative.2. The commission may enforce its subpoenas and subpoenas duces tecum by applying to the circuit court of Cole County; the county of the investigation, hearing, or proceeding; or any county where the person, controlling person, or other legal entity subpoenaed resides or may be found for an order to show cause why such subpoena should not be enforced, such order and a copy of the application therefor to be served upon the person in the same manner as a summons in a civil action, and if the circuit court shall, after a hearing, determine that the subpoena should be sustained and enforced, such court shall proceed to enforce the subpoena in the same manner as though the subpoena had been issued in a civil case in the circuit court. L. 2007S.B. 272 , A.L. 2012H.B. 1103 .