Dormant Commerce Clause

Definition / Rule

The Dormant Commerce Clause (DCC) — also called the negative Commerce Clause — is the implied limitation on state power derived from the Commerce Clause (Art. I, § 8, cl. 3). Even when Congress has not legislated, states may not enact laws that discriminate against interstate commerce or unduly burden it. The doctrine rests on the premise that the Commerce Clause implicitly empowers the federal government alone to regulate interstate commerce, prohibiting economic balkanization among the states.

Two-Track Analysis

Track 1: Facially Discriminatory Laws (Strict Scrutiny)

A law that discriminates against interstate commerce on its face, in purpose, or in practical effect is virtually per se invalid. The state bears the burden of showing (1) a legitimate local purpose and (2) no non-discriminatory alternative achieves that purpose. This standard is rarely satisfied.

• Discrimination = differential treatment of in-state vs. out-of-state economic interests
• Even facially neutral laws can discriminate in effect (see West Lynn Creamery)

Track 2: Facially Neutral Laws (Pike Balancing)

Laws that burden interstate commerce without discriminating against it are analyzed under Pike v. Bruce Church (1970) balancing:

“Where the statute regulates evenhandedly to effectuate a legitimate local public interest, and its effects on interstate commerce are only incidental, it will be upheld unless the burden imposed on such commerce is clearly excessive in relation to the putative local benefits.”

Factors: nature and extent of burden on commerce, strength of local interest, availability of less burdensome alternatives.

Key Cases

• Philadelphia v. New Jersey (1978) — Struck down NJ law prohibiting importation of out-of-state solid waste. Classic discriminatory law; state cannot use its borders as a barrier to commerce.
• West Lynn Creamery v. Healy (1994) — Struck down MA milk pricing order that combined a facially neutral tax with a subsidy to in-state producers. Even facially neutral schemes can discriminate in their combined operation.
• Pike v. Bruce Church, Inc. (1970) — Struck down AZ law requiring cantaloupe grown in AZ to be packed in AZ. Established Pike balancing test for neutral laws. Burden was “substantial” relative to minimal local benefit.
• Hunt v. Washington State Apple Advertising Commission (1977) — Struck down NC apple labeling law; though facially neutral, it had discriminatory effect by disadvantaging WA’s superior grading system.
• Maine v. Taylor (1986) — Upheld ME ban on importation of out-of-state baitfish; state proved no non-discriminatory alternative to protect against parasites. Rare successful strict scrutiny defense.

Exceptions

1. Congressional authorization — Congress may authorize state laws that would otherwise violate the DCC (market participant exception to this rule does not apply when Congress acts)
2. Market participant exception — When a state acts as a market participant (buyer or seller) rather than a regulator, the DCC does not apply (Reeves, Inc. v. Stake; Hughes v. Alexandria Scrap)

Policy

Against balkanization: The Founders feared economic warfare between states under the Articles of Confederation. The DCC prevents states from erecting trade barriers that fragment the national market.

Free trade: Enforcing a national free trade zone promotes economic efficiency and comparative advantage.

Critique (Thomas, Scalia): The DCC has no textual basis; the Commerce Clause is a grant of power to Congress, not a prohibition on states. Congress can address harmful state laws through legislation.