(a) The commission shall supervise all proceedings to be taken and acts to be performed under this subchapter concerning the borrowing of money, the mortgaging and encumbering of properties and facilities, the franchise, revenue, and income from the operation of properties and facilities, and the issuance of evidences of indebtedness.
(b) The commissioners court of any county included in whole or in part inside the boundaries of a district and the navigation board established for a district shall not be required to take any action in connection with this subchapter, approve or ratify any proceedings taken by the commission, or approve or ratify any act performed by the commission.