Appellants american trucking associations inc its contract carrier conference the national automobile transporters association and six motor carriers brought it in federal district court to set aside the commissions order see 28 usc 1336 28 usc a 1336. Us supreme court american trucking associations inc v united states 382 us 372 1966 382 us 372 american trucking associations inc et al v united . In february 1962 the american trucking associations in the course of oral argument in gordons transports inc v strickland transp co 318 icc 395 sustained sub nom strickland transportation co v united states 219 fsupp 618 dcndtex1963 apparently urged that motor carriers be allowed to utilize tofc open tariffs on april 5 1962 president kennedy sent a transportation . Pennsylvania railroad co v united states et al no 511 supreme court of the united states january 17 1966 rehearing denied april 18 1966. American trucking associations inc nine other motor carriers a group of railway trade unions and several other organizations intervened arguing that 1 the commission was required to limit motor service by a rail owned motor carrier to auxiliary or supplementary service and 2 the evidence was not sufficient to support the commissions certification order the district court upheld