No officer or employee of the Federal Government may regulate the conduct of States under this part or enforce any provision of this part, except to the extent expressly provided in this part.
42 U.S. Code § 617 - Limitation on Federal authority
A prior section 617, act Aug. 14, 1935, ch. 531, title IV, § 417, formerly § 418, as added Oct. 13, 1988, Pub. L. 100–485, title VI, § 603(a), 102 Stat. 2408; renumbered § 417, Nov. 10, 1988, Pub. L. 100–647, title VIII, § 8105(7), 102 Stat. 3798, related to Assistant Secretary for Family Support, prior to repeal by Pub. L. 104–193, § 103(a)(1), as amended by Pub. L. 105–33, title V, § 5514(c), Aug. 5, 1997, 111 Stat. 620.
Amendment by Pub. L. 105–33 effective as if included in the provision of Pub. L. 104–193 amended at the time the provision became law, see section 5518(d) of Pub. L. 105–33, set out as a note under section 862a of Title 21, Food and Drugs.
Section effective July 1, 1997, with transition rules relating to State options to accelerate such date, rules relating to claims, actions, and proceedings commenced before such date, rules relating to closing out of accounts for terminated or substantially modified programs and continuance in office of Assistant Secretary for Family Support, and provisions relating to termination of entitlement under AFDC program, see section 116 of Pub. L. 104–193, as amended, set out as a note under section 601 of this title.