39 U.S.C. § 3684
Limitations
Except as provided in section 3627 of this title , no provision of this chapter shall be construed to give authority to the Governors to make any change in any provision of this title.
( Pub. L. 91–375 , Aug. 12, 1970 , 84 Stat. 765 ; Pub. L. 99–410, title II, § 201(b)(4) , Aug. 28, 1986 , 100 Stat. 929 ; Pub. L. 109–435, title X, § 1010(f) , Dec. 20, 2006 , 120 Stat. 3262 .)