Taxation-State and Local Commons^™

Is "Internal Consistency" Dead?: Reflections On An Evolving Commerce Clause Restraint On State Taxation, Walter Hellerstein

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Under the "internal consistency" doctrine articulated by the U.S. Supreme Court under the dormant Commerce Clause, a state tax must be structured so that if every state were to impose an identical tax, interstate commerce would fare no worse than intrastate commerce. Although a relatively recent addition to the Court's Commerce Clause jurisprudence, the doctrine has played a significant role as the basis for the judicial invalidation of a wide array of state and local taxes. In American Trucking Associations, Inc., v. Michigan Public Service Commission, 545 U.S. 429 (2005), however, the Court sustained an admittedly "internally inconsistent" $100 per …