16 USC § 822
Reservation of right to alter or repeal chapter
through Pub. L. 116-344, except Pub. Ls. 116-260 and 116-283
The right to alter, amend, or repeal this chapter is expressly reserved; but no such alteration, amendment, or repeal shall affect any license theretofore issued under the provisions of this chapter or the rights of any licensee thereunder.