Interstate commerce. To amend sec. 3 of interstate commerce act, hearings before subcommittee, 73d Congress, 2d session, on S. 2477, to amend paragraph (1) of sec. 3, as amended Feb. 28, 1920, and Mar. 4, 1927 (U.S.C., title 49, sec. 3) of interstate commerce act (U.S.C., title 49, ch. 1) [prohibiting common carriers from giving undue preference or advantage to any person, etc., or locality, by including in word "locality" any port with respect to import, export, and coastwise traffic routed through it], May 2 and 14, 1934.