Louisiana constitution
Article 7
Section 15

The legislature shall have no power to release, extinguish, or authorize the releasing or extinguishing of any indebtedness, liability, or obligation of a corporation or individual to the state, a parish, or a municipality. However, the legislature, by law, may establish a system under which claims by the state or a political subdivision may be compromised, and may provide for the release of heirs to confiscated property from taxes due thereon at the date of its reversion to them.