In subsec. (b)(2), “subchapter I of chapter 57 of title 5” substituted for “the Travel Expense Act of 1949, as amended (5 U.S.C. 835–842),” on authority of Pub. L. 89–554, § 7(b), Sept. 6, 1966, 80 Stat. 631, the first section of which enacted Title 5, Government Organization and Employees.

Section was formerly classified to section 170j of Title 5 prior to the general revision and enactment of Title 5, Government Organization and Employees, by Pub. L. 89–554, § 1, Sept. 6, 1966, 80 Stat. 378.