Summary

Mahlon Pitney O'Keefe v. United States — Opinion of the Court

The final contention, which is that the Commission's order in effect deprives the New Orleans, Texas, & Mexico of its property without due process of law, by denying to it the right to contract and compete for traffic originating on the line of the Louisiana & Pacific, is transparently unsound. The trunk line has no constitutional right to build up its business by paying bonuses or rebates that have been forbidden by act of Congress from considerations affecting the public welfare.
Source: Wikisource

Mahlon Pitney O'Keefe v. United States — Opinion of the Court

That body has the authority and it is its duty to reach all unlawful discriminatory practices resulting in favoritism and unfair advantages to particular shippers or carriers. It is not only within its power, but the law makes it the duty of the Commission to make orders which shall nullify such practices resulting in rebating or preferences, whatever form they take and in whatsoever guise they may appear.
Source: Wikisource

Mahlon Pitney O'Keefe v. United States — Opinion of the Court

Because we reach the conclusion that the tap lines involved in these appeals are common carriers, as well of proprietary as nonproprietary traffic, and as such entitled to participate in joint rates with other common carriers, that determination falls far short of deciding, indeed, does not at all decide, that the division of such joint rates may be made at the will of the carriers involved, and without any power of the Commission to control.
Source: Wikisource

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