19 U.S.C. § 1435b
Section, acts June 16, 1937, ch. 362, 50 Stat. 303; 1946 Reorg. Plan No. 3, §§101-104, eff. July 16, 1946, 11 F.R. 7875, 60 Stat. 1097; June 2, 1970, Pub. L. 91-271, title III, §320, 84 Stat. 293, related to clearance of vessels arriving on Sundays, holidays, or at night.