Missouri Revised Statutes Title II. Sovereignty, Jurisdiction and Emblems § 8.560. No bankruptcy petition may be filed, when

Prior to the date which is three hundred sixty-six days after which the authority no longer has any bonds outstanding, the authority is prohibited from filing a voluntary petition pursuant to chapter 9 of the federal bankruptcy code or such corresponding chapter or section as may, from time to time, be in effect, and a public official or organization, entity, or other person shall not authorize the authority to be or become a debtor pursuant to chapter 9 or any successor or corresponding chapter or sections during such periods. The provisions of this section shall be part of any contractual obligation owed to the holders of bonds issued under sections 8.500 to 8.565 and shall not subsequently be modified by state law during the period of the contractual obligation.