La. Stat. tit. 3 § 4283
The consent of the state is given to the acquisition by the United States by purchase or gift of such land in Louisiana as in the opinion of the federal government may be needed for the establishment of national forests in this region. However, the state retains a concurrent jurisdiction with the United States in and over such lands so that civil process in all cases and such criminal process as may issue under the authority of the state against the person charged with a commission of any crime without or within the jurisdiction may be executed thereon in like manner as before. Congress may pass such laws as it deems necessary to the acquisition as herein provided for incorporation in the national forest of such forests, covered, or cut-over lands lying in Louisiana as in the opinion of the federal government may be needed. Congress may pass such laws and make or provide for the making of such rules and regulations of both civil and criminal nature and provide punishment for violation thereof as in its judgment are necessary for the management, control, and protection of such lands as are from time to time acquired by the United States under the provisions of this Section.
La. R.S. § 3:4283