5 U.S. Code § 8959
5 U.S. Code § 8959 is about Preemption. It is under Chapter 89A (Enhanced Dental Benefits) of Subpart G (Insurance And Annuities) of Part III (Employees) of Title 5 (Government Organizations and Employees) of the Code.
The terms of any contract that relate to the nature, provision, or extent of coverage or benefits (including payments with respect to benefits) shall supersede and preempt any State or local law, or any regulation issued thereunder, which relates to dental benefits, insurance, plans, or contracts.