La. Stat. tit. 14 § 360
In determining that any organization or individual is in fact a communist action organization, a communist front organization, a communist infiltrated organization, a subversive organization, a communist or a subversive person, the following procedure shall be the legal method of such determination:
Upon any district attorney or the attorney general being reasonably informed that an organization or person is or should be subject to the regulation of R.S. 14:358 through 373, the district attorney having proper jurisdiction, or the attorney general, shall institute in the appropriate district court a civil proceeding in the name of the state of Louisiana against such organization or individual, setting forth the relevant and pertinent facts pertaining to said organization or individual under the definitions provided in R.S. 14:358 through 373, and praying for a judgment of the court determining, from the facts presented concerning said organization or individual, whether or not said organization or individual is in fact a communist action organization, a communist front organization, a communist infiltrated organization, a subversive organization, a communist or a subversive person, as the case may be. All such suits shall be procedurally handled as an adversary proceeding the same as any other civil action. The judgment of the court in such actions shall be based upon a preponderance of the evidence, as in all other civil cases. No determination of fact as provided in this Section concerning any organization or individual shall be made by any other way than by judgment of a district court of this state, which judgment shall, when so justified by the facts presented, be rendered as prayed for by the district attorney or attorney general, as the case may be, identifying the defendant in the terms defined in R.S. 14:359. The provisions of Articles 1871 through 1883, of the Louisiana Code of Civil Procedure, concerning declaratory judgments, shall apply to all civil actions provided for in this Section.
La. R.S. § 14:360