Summary

Portrait of Harlan F. Stone Harlan F. Stone Gwin White Prince v. Henneford…

It is as essential today, as at the time of the adoption of the Constitution, that commerce among the States and with foreign nations be left free from discriminatory and retaliatory burdens imposed by the States. It is of equal importance, however, that the judicial department of our government scrupulously observe its constitutional limitations and that Congress alone should adopt a broad national policy of regulation-if otherwise valid State laws combine to hamper the free flow of commerce.
Source: Wikisource

Portrait of Harlan F. Stone Harlan F. Stone Gwin White Prince v. Henneford…

Doubtless, much confusion would be avoided if the courts would refrain from restricting the enforcement of valid, nondiscriminatory State tax laws. Any belief that Congress has failed to take cognizance of the problems of conjectured 'multiple taxation' or 'apportionment' by exerting its exclusive power over interstate commerce, is an inadequate reason for the judicial branch of government-without constitutional power-to attempt to perform the duty constitutionally reposed in Congress.
Source: Wikisource

Portrait of Harlan F. Stone Harlan F. Stone Gwin White Prince v. Henneford…

A State's taxes are not discriminatory if the State treats those engaged in interstate and intra-state business with equality and justice. If the combined valid and non-discriminatory taxes of many States raise a problem, only Congress has power to consider that problem and to regulate with respect to it. Neither a State, nor a State with the approval of this Court, has the constitutional power to enact rules to adjust and govern conflicting State interests in interstate commerce.
Source: Wikisource

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