La. Stat. tit. 33 § 2433
Wherever the provisions of any law of the United States, or of any rule, order or regulation of any federal agency or authority, providing or administering federal funds for use in Louisiana, either directly or indirectly or as a grant-in-aid, or to be matched or otherwise, impose other or higher civil service merit standards or different classifications than are required by the provisions of this Part, the provisions of the laws, classification, rules or regulations of the United States or any federal agency may be adopted by the commission as rules and regulations of the commission and shall when so adopted govern the class of employment and employees affected thereby, regardless of anything in this Part to the contrary.
La. R.S. § 33:2433