CFR›Title 22›Chapter I›Part 138›22 CFR Part 138 Subpart E Citation22 CFR Part 138 Subpart EContainsSection § 138.500CorpusDaily eCFRDisplayed edition2026-10-22Last updated2026-10-22 Subpart E—Exemptions Sections § 138.500 § 138.500 Secretary of Defense. Authority22 U.S.C. 2651a; 31 U.S.C. 1352; Pub. L. 114-74, 129 Stat. 584.Source55 FR 6737, 6749, Feb. 26, 1990, unless otherwise noted.