20 USC § 67
Right of repeal
through Pub. L. 116-344, except Pub. Ls. 116-260 and 116-283
Congress may alter, amend, add to, or repeal any of the provisions of sections 41 to 46, 48, 50, 51 to 53, and 54 to 57, of this title; but no contract or individual right made or acquired under such provisions shall be thereby divested or impaired.
Codification
R.S. §5594 derived from act Aug. 10, 1846, ch. 178, §11, 9 Stat. 106.