42 U.S.C. § 2000c–9
Nothing in this subchapter shall prohibit classification and assignment for reasons other than race, color, religion, sex or national origin.
(Pub. L. 88–352, title IV, § 410, , 78 Stat. 249; Pub. L. 92–318, title IX, § 906(a), , 86 Stat. 375.)
1972—Pub. L. 92–318 inserted “sex” after “religion,”.