United States Et Al. v. Chicago Heights Trucking Co. Et Al‪.‬

Respondents are forty-one interstate common carriers operating motor vehicles subject to the Interstate Commerce Commission under the Federal Motor Carrier Act of 1935. Our decision turns upon the validity of an order of the Commission canceling certain proposed tariffs of these carriers upon the ground that they were unlawfully discriminatory in affording lower rates to "forwarders" of freight than to other shippers.