Section,
Pub. L. 87–130, Aug. 10, 1961,
75 Stat. 323;
Pub. L. 89–90, July 27, 1965,
79 Stat. 269;
Pub. L. 91–145, Dec. 12, 1969,
83 Stat. 343, provided for reimbursement of transportation expenses of employees in Senator’s office, authorizing eight round trips in any fiscal year and two additional mileage payments when office of Senator is from a State having a population of ten million or more inhabitants and requiring voucher certification of travel as being in line of official duty.
Act June 27, 1956, ch. 453,
70 Stat. 360, as amended by acts July 12, 1960,
Pub. L. 86–628,
74 Stat. 449; Mar. 31, 1961,
Pub. L. 87–14, title I,
75 Stat. 29.
Act Aug. 5, 1955, ch. 568,
69 Stat. 504.