Louisiana Code of Civil Procedure Tit. VI, Art. 1878. Supplemental relief; expedited hearing for constitutional determination; effect of pendency of other proceedings

A. Further relief based on a declaratory judgment or decree may be granted whenever necessary or proper. The application therefor shall be by petition to a court having jurisdiction to grant the relief. If the application is considered sufficient, the court, on reasonable notice, shall require any adverse party whose rights have been adjudicated by the declaratory judgment or decree, to show cause why further relief should not be granted forthwith.

B. In any action or proceeding seeking a declaratory judgment as to the constitutionality of the expenditure of state funds, the court shall set the matter with preference and proceed to hear and determine the matter as expeditiously as the ends of justice may require, notwithstanding resolution of a pending petition for injunction sought pursuant to Article 3601 or a petition for mandamus sought pursuant to Article 3862.