Wyo. Const. art. 3, § 40

Debts to state or municipal corporation cannot be released unless otherwise prescribed by legislature. No obligation or liability of any person, association or corporation held or owned by the state or any municipal corporation therein shall ever be exchanged, transferred, remitted, released, postponed or in any way diminished except as may be prescribed by the legislature. The liability or obligation shall not be extinguished except by payment into the proper treasury or as may otherwise be prescribed by the legislature in cases where the obligation or liability is not collectible.