The "dormant Commerce Clause" does not expressly exist in the Constitution. It is, rather, a doctrine of congressional power inferred by the Supreme Court from the actual "Commerce Clause" in Article I, § 8 of the Constitution. This article authorizes Congress to "regulate commerce among the states."
The Commerce Clause vests Congress with the power to regulate, "that is, to prescribe the rule by which commerce is to be governed" [1]. Typically, Congress utilizes this power by enacting a law. However, according to the Dormant Commerce Clause, even when Congress has not acted (i.e. Congress’s power to regulate commerce lies dormant) the Supreme Court may find certain state and local laws unconstitutional if they unduly burden interstate commerce.
The Supreme Court, in explaining the necessity for the dormant Commerce Clause, said, "Our system, fostered by the Commerce Clause, is that every farmer and every craftsman shall be encouraged to produce by the certainty that he will have free access to every market in the Nation." [2]
There are only two exceptions that permit otherwise unconstitutional laws to remain in effect. The first exception is if Congress approves the law. The second is "if a state is acting as a market participant, rather than as a market regulator" [4].
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1 Gibbons v. Ogden, 22 U.S. 1, 196, 6 L. Ed. 23, 70 (1824).
2 H.P. Hood & Sons, Inc. v. Du Mond, 336 U.S. 525, 532, 93 L. Ed. 865, 871 (1949).
3 H.P. Hood & Sons, Inc. v. Du Mond, 336 U.S. 525, 539, 93 L. Ed. 865, 875 (1949).
4 South-Central Timber Dev., Inc. v. Wunnicke, 467 U.S. 82, 87, 81 L. Ed. 2d 71, 76 (1984).
The Dormant Commerce Clause Doctrine (hereafter DCC) evolves out of Congress desire to federally regulate commerce by using powers not specifically enumerated in the Constitution. Congress has pulled the basis for this power out of the Commerce Clause. The DCC holds that a state or local law is unconstitutional if it “burdens” interstate commerce. The DCC is dormant because it does not distribute federal law; rather, it prohibits state action. This essay will over-simplify how the Courts evaluate issues arising under the DCC.
Originally, pre-1938, the Supreme Court (hereafter Court) would evaluate the DCC questions per state police powers. See Cooley v. Board of Wardens, 53 U.S. (12 How.) 299 (1851). However, today the Court uses a much more contrived test. First, the Court looks at the language of the state statute. They then determine if it is facially discriminatory or facially neutral. If the statute is facially discriminatory, then the statute is presumed unconstitutional. Cases to look at in this area are the City of Philadelphia v. N.Y., 437 U.S. 617 (1978) and C&A Carbon, Inc v. Town of Clarkstown, N.Y, 511 U.S. 383 (1994).
This presumption can be rebutted if the state can demonstrate under a strict scrutiny standard that either the law is necessary (that no other non-discriminatory means were available), or that the law meets an important state objective/legitimate local interest. This is a hard presumption to rebut, and consequently the Court has only upheld one facially discriminatory state law. See Maine v. Taylor, 477 U.S. 131 (1986).
If the state statute is facially neutral then the Court will examine its purpose or effect. See Hunt v. Washington State Apple Advertising Comm., 432 U.S. 333 (1997) and Exxon Corp. v. Governor of MD. 437 U.S. 117 (1978).
If the statutes purpose or effect is discriminatory, then it is presumed unconstitutional. See Dean Milk Co. v. City of Madison, WI, 340 U.S. 349 (1951). Again, this presumption can be rebutted if the state can demonstrate under a strict scrutiny standard that either the law is necessary (that no other non-discriminatory means were available), or that the law meets an important state objective/legitimate local interest. The Court usually finds that there are other means available and holds the state law unconstitutional. See Hunt v. Washington State Apples, 432 U.S. 333 (1997).
If the Court finds that the purpose or effect of the state statute was not discriminatory, then they apply a balancing test. In this test, the Court balances the burden on interstate commerce versus the state interest. In these cases the Court usually finds for the state. See Loren J. Pike v. Bruce Church, Inc., 397 U.S. (1970), and Bibb, Director, Dept. of Public Safety of IL. v. Navajo Freight Lines, Inc., 359 U.S. (1959).
Finally, there are two exceptions to the DCC. The first exception occurs when Congress has acted. See Western & Southern Life Ins. v. State Board of California, 451 U.S. 648 (1981). In this case the DCC is no longer dormant and is a Commerce Clause issue. The second exception is Market Participation. This occurs when the state is acting like a business. Like a business, a state when acting in this capacity may discriminate in favor of its own citizens or, when it is dolling out government benefits.
The preeminent case for Market exceptions are Reeves v. William Stake, 447 U.S. 429 (1980) and South-Central Timber v. Alaska, 467 U.S. 82 (1984). The Reeves case sets the standard for the Market exception test (supra). In this case state run cement co-ops were allowed to make restrictive rules, (e.g. not sell to out-of-state). Here, this government-sponsored business was acting restrictively like an individually owned business and this action was held to be constitutional. Alaska Timber is important because it limits the Market exception (supra).