the amount is just and reasonable. (h) Payments (1) In general Upon the approval by the Administrator, payments under subsection (a) may be made from funds appropriated for such payments. (2) Limitation The Administrator shall not approve payments under paragraph (1), except to the extent provided in an appropriation law or to the extent additional legislative authority is enacted providing for such payments. (3) Additional appropriations If the Administrator requests additional appropriations to make payments under this subsection, then the request for those appropriations shall be made in accordance with the procedures established under section 50915. (i) Rules of construction (1) In general The authority to indemnify under this section shall not create any rights in third persons that would not otherwise exist by law. (2) Other authority Nothing in this section may be construed as prohibiting the Administrator from indemnifying a provider or any other NASA contractor under other law, including under Public Law 85–804 ( 50 U.S.C. 1431 et seq.). (3) Anti-Deficiency Act Notwithstanding any other provision of this section— (A) all obligations under this section are subject to the availability of funds