Louisiana Revised Statutes Tit. 9, § 203. Officiant; judges and justices of the peace

(1) A justice of the supreme court within the state;

(2) A judge of a court of appeals within the circuit;

(3) A judge of a district court within the district;

(4) A judge of a family court, juvenile court, parish court, city court, or, in Orleans Parish, a municipal or traffic court, within the parish in which the court is situated; and

(5) A justice of the peace within the parish in which the court of that justice of the peace is situated, and in any parish within the same supreme court district, or in a parish that has no justice of the peace court, except for Orleans Parish.

E. (1) A United States District Court judge or magistrate judge of the Eastern District of Louisiana, Middle District of Louisiana, or Western District of Louisiana may perform marriage ceremonies in this state upon the adoption of a court rule, resolution, or standing order by a majority of the judges sitting en banc authorizing judges to perform such ceremonies.

(2) A judge of a court of the United States whose official duty station includes a municipality having a population in excess of one hundred five thousand but less than one hundred thirty thousand persons according to the latest decennial census may perform marriage ceremonies within his official duty station. The authority granted by this Paragraph shall be effective only from August 1, 2012, through September 1, 2012.