Louisiana Code of Civil Procedure Tit. VI, Art. 4431. Foreign tutor; authority and powers

Upon producing proof of his appointment, a tutor or guardian of a minor residing outside Louisiana, appointed by a court outside Louisiana, may appear in court on behalf of the minor without qualifying as tutor according to the law of Louisiana, when no tutor has been appointed in this state. He may perform acts affecting the minor's property in Louisiana, when authorized by the court of the parish in which the property is situated, in the same manner as a tutor appointed by a court in Louisiana.

Whenever the action of an undertutor would be necessary, an undertutor ad hoc shall be appointed by the court.