La. Stat. tit. 33 § 4546.12
Any holder of bonds issued under the provisions of this Chapter or any of the coupons appertaining thereto, and the trustee under any trust agreement, except to the extent the rights herein given may be restricted by such trust agreement or the resolution authorizing the issuance of such bonds, may, either at law or in equity, by suit, action, mandamus, or other proceeding, protect and enforce any and all rights under the laws of the state or granted hereunder, or, to the extent permitted by law, under such trust agreement or other contract executed by the authority pursuant to this Chapter, and may enforce and compel the performance of all duties required by this Chapter or by such trust agreement or resolution to be performed by the authority or any political subdivision or any public official, including the fixing, charging, and collecting of rents, rates, fees, and charges for the purchase of natural gas.
La. R.S. § 33:4546.12