Louisiana constitution
Article 6
Section 29

(1) Exemptions or exclusions uniformly applicable to the taxes of all local governmental subdivisions, school boards, and other political subdivisions whose boundaries are not coterminous with those of the state.
(2) Exemptions or exclusions applicable to the taxes of the state or applicable to political subdivisions whose boundaries are coterminous with those of the state, or both.
(3) Exemptions or exclusions uniformly applicable to the taxes of all the tax authorities in the state.