In subsec. (a), “subchapter I of chapter 57 of title 5” substituted for “the Travel Expense Act of 1949, as amended” and for “the Travel Expense Act of 1949, as amended (5 U.S.C. 835–842)”, and “section 5731(a) of title 5” substituted for “section 10 of the Act of March 3, 1933, (5 U.S.C. 73(b)”, 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 2377 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.

1966—Subsec. (b). Pub. L. 89–733 inserted “Unless prohibited by State or local law”.