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21 U.S.C. 391: Separability clauseText contains those laws in effect through Public Law 119-120 (October 7, 2026).
From Title 21-FOOD AND DRUGSCHAPTER 9-FEDERAL FOOD, DRUG, AND COSMETIC ACT
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§391. Separability clause

If any provision of this chapter is declared unconstitutional, or the applicability thereof to any person or circumstances is held invalid, the constitutionality of the remainder of the chapter and the applicability thereof to other persons and circumstances shall not be affected thereby.

( June 25, 1938, ch. 675, § 1001 , formerly § 901, 52 Stat. 1059 ; renumbered § 1001, Pub. L. 111–31, div. A, title I, § 101(b)(2) , June 22, 2009 , 123 Stat. 1784 .)