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, July 2, 1964, 78 Stat. 249; Pub. L. 92–318, title IX, § 906(a), June 23, 1972, 86 Stat. 375.)