19 U.S. Code § 1652 - Separability
If any provision of this chapter, or the application thereof to any person or circumstances, is held invalid, the remainder of the chapter, and the application of such provision to other persons or circumstances, shall not be affected thereby.
Provisions similar to those in this section were contained in act Sept. 21, 1922, ch. 356, title IV, § 645, 42 Stat. 990. That section was superseded by section 652 of act June 17, 1930, comprising this section, and repealed by section 651(a)(1) of the 1930 act.