(a) An indebtedness, liability, or obligation of the state bar does not:
(1) create a debt or other liability of the state or of any entity other than the state bar or any successor public corporation; or
(2) create any personal liability on the part of the members of the state bar or the members of the board of directors or any authorized person issuing, executing, or delivering any evidence of the indebtedness, liability, or obligation.
(b) The state bar may not create an indebtedness, liability, or obligation that cannot be paid from the receipts for the current year unless approved by referendum of all members of the state bar as provided by Section 81.024.