
The Commerce Clause, found in Article 1, Section 8, Clause 3 of the U.S. Constitution, grants Congress the power to regulate commerce with foreign nations, among states, and with Indian tribes. The interpretation of this clause is crucial in determining the scope of federal power over numerous aspects of American life. The Commerce Clause has been the subject of long-standing political controversy, with some arguing that it refers solely to trade or exchange, while others contend that it encompasses broader commercial and social intercourse between citizens of different states. This clause has been used by Congress to justify exercising legislative power over state activities, impacting state governments through the Dormant Commerce Clause, which prohibits states from passing laws that discriminate against or excessively burden interstate commerce.
| Characteristics | Values |
|---|---|
| Location in the Constitution | Article 1, Section 8, Clause 3 |
| Powers granted to Congress | Regulate commerce with foreign nations, among states, and with Indian tribes |
| Powers restricted from states | Impairing interstate commerce |
| Other names | Interstate Commerce Clause |
| Notable cases | Gibbons v. Ogden, West Lynn Creamery Inc. v. Healy, NLRB v. Jones & Laughlin Steel Corp, Gonzales v. Raich, NFIB v. Sebelius |
| Interpretations | Source of federal power, restriction on state power, limit on Congress's power over intrastate commerce |
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What You'll Learn
- The Commerce Clause is in Article 1, Section 8, Clause 3
- The Clause gives Congress broad power over interstate commerce
- It restricts states from impairing interstate commerce
- The Commerce Clause affects state governments through the Dormant Commerce Clause
- The Supreme Court has interpreted the Clause differently over time

The Commerce Clause is in Article 1, Section 8, Clause 3
The interpretation of the Commerce Clause is very important in determining the scope of federal power in controlling many aspects of American life. It is the most broadly interpreted clause in the Constitution, leading to laws that some argue contradict the original intended meaning of the document. For example, the Commerce Clause has been used to justify federal regulation of intrastate production, such as in Gonzales v. Raich, where the Supreme Court upheld federal regulation of intrastate marijuana production.
The Commerce Clause emerged as a response to the absence of any federal commerce power under the Articles of Confederation. Its primary use for the first century of its existence was to prevent discriminatory state legislation. As the country's economy became increasingly interdependent, Congress began to use the Commerce Clause to usher in a new era of federal regulation, beginning with the enactment of the Interstate Commerce Act in 1887 and the Sherman Antitrust Act in 1890.
The Commerce Clause also affects state governments through what is known as the Dormant Commerce Clause. This refers to the prohibition, implicit in the Commerce Clause, against states passing legislation that discriminates against or excessively burdens interstate commerce. For example, in West Lynn Creamery Inc. v. Healy, the Supreme Court struck down a Massachusetts state tax on milk products because it impeded interstate commercial activity by discriminating against non-Massachusetts citizens and businesses.
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The Clause gives Congress broad power over interstate commerce
The Commerce Clause, found in Article 1, Section 8, Clause 3 of the US Constitution, grants Congress broad powers to regulate commerce with foreign nations, among the states, and with the Indian tribes. This clause has been interpreted broadly, allowing Congress to regulate not only interstate commerce but also intrastate activities that substantially affect interstate commerce.
The early Supreme Court cases primarily viewed the Commerce Clause as a limitation on state power rather than a grant of federal power. The Court held that Congress could regulate intrastate activities that were part of a larger interstate commercial scheme. This interpretation allowed Congress to address problems that individual states were unable to solve effectively, such as discriminatory state legislation that favoured local citizens or businesses at the expense of non-citizens conducting business within the state.
The Supreme Court's interpretation of the Commerce Clause evolved over time. In the late 19th and early 20th centuries, Congress "ushered in a new era of federal regulation under the commerce power" with the enactment of the Interstate Commerce Act in 1887 and the Sherman Antitrust Act in 1890. The Court began to recognise broader grounds for using the Commerce Clause to regulate state activity, holding that any activity with a "substantial economic effect" on interstate commerce fell within the scope of the Clause. This expansion of power continued with the Civil Rights Act of 1964, which aimed to prevent businesses from discriminating against black customers.
However, in United States v. Lopez (1995), the Supreme Court attempted to curtail Congress's broad powers under the Commerce Clause by returning to a more conservative interpretation. The Court held that Congress could only regulate the channels of commerce, the instrumentalities of commerce, and actions that substantially affect interstate commerce. This decision marked a shift towards protecting civil liberties rather than economic rights in the Court's jurisprudence.
Despite this, the Commerce Clause remains one of the most broadly interpreted clauses in the Constitution, leading to ongoing controversy over the balance of power between the federal government and the states. The interpretation of the Clause continues to play a crucial role in determining the scope of federal power and has been used to justify numerous laws that some argue contradict the original intent of the Constitution.
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It restricts states from impairing interstate commerce
The Commerce Clause, which refers to Article 1, Section 8, Clause 3 of the U.S. Constitution, grants Congress the power to regulate commerce with foreign nations and among the states. This clause has been interpreted broadly, with Congress using it to justify exercising legislative power over state activities and citizens, leading to debates about the balance of power between federal and state governments.
The Commerce Clause restricts states from impairing interstate commerce by preventing discriminatory state legislation that could favour in-state citizens or businesses over out-of-state competitors. This is known as the Dormant Commerce Clause, which aims to ensure a level playing field in interstate commerce. For example, in West Lynn Creamery Inc. v. Healy, the Supreme Court struck down a Massachusetts state tax on milk products as it impeded interstate commerce by discriminating against non-Massachusetts entities.
The interpretation of the Commerce Clause has evolved over time. During the Lochner era (1905-1937), the Supreme Court narrowed its interpretation, suggesting that Congress could not pass laws impeding individuals' rights to enter business contracts. However, this changed with cases like NLRB v. Jones & Laughlin Steel Corp (1937), where the Court recognised that Congress could regulate state activity if it had a "substantial economic effect" on interstate commerce.
The Supreme Court has also played a role in shaping the interpretation of the Commerce Clause. In United States v. Lopez (1995), the Court attempted to curtail Congress's broad mandate by adopting a more conservative interpretation, holding that Congress could only regulate channels of commerce, instrumentalities of commerce, and actions substantially affecting interstate commerce. This case marked a shift in the Court's focus from economic rights to civil liberties.
The Tenth Amendment to the Constitution has also influenced the Court's view of the Commerce Clause. It states that the federal government has powers specifically delegated to it, with other powers reserved for the states or the people. This amendment highlights the importance of interpreting the Commerce Clause accurately to define the scope of federal power in controlling various aspects of American life.
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The Commerce Clause affects state governments through the Dormant Commerce Clause
The Commerce Clause, found in Article 1, Section 8, Clause 3 of the US Constitution, grants Congress the power to regulate commerce with foreign nations, among states, and with the Indian tribes. While the Commerce Clause primarily deals with federal powers, it also affects state governments through the Dormant Commerce Clause.
The Dormant Commerce Clause is an interpretation of the Commerce Clause that prohibits states from passing legislation that discriminates against or excessively burdens interstate commerce. This interpretation aims to prevent states from adopting protectionist measures that favour their own citizens or businesses over non-citizens conducting business within the state. For example, in West Lynn Creamery Inc. v. Healy, the Supreme Court struck down a Massachusetts state tax on milk products as it impeded interstate commerce by discriminating against non-Massachusetts citizens and businesses.
The Dormant Commerce Clause is based on the idea that the mere existence of the Commerce Clause bars states from certain actions, such as imposing duties of tonnage. This interpretation has been supported by Supreme Court cases such as South Dakota v. Wayfair, Inc., where the Court held that states may not discriminate against interstate commerce. Another example is National Pork Producers Council v. Ross, where the Court affirmed that California's Proposition 12, which forbade the sale of pork from pigs confined in a cruel manner, did not violate the Dormant Commerce Clause.
The Dormant Commerce Clause also includes the "market participation exception," which allows states to act as businesses or customers rather than as market regulators. In these cases, states may favour certain customers or suppliers, as long as they do not exceed their authority to favour local interests. An example of this exception is White v. Massachusetts Council of Constr. Employers, Inc., where the Supreme Court held that the City of Boston could require its building contractors to hire a certain percentage of their workforce from Boston residents.
The interpretation and application of the Dormant Commerce Clause have evolved over time, with the Supreme Court sometimes narrowing or broadening its interpretation. For instance, during the Lochner era between 1905 and 1937, the Court experimented with a narrower interpretation, exploring the idea that the Commerce Clause does not empower Congress to pass laws impeding an individual's right to enter business contracts. However, this changed in 1937 with NLRB v. Jones & Laughlin Steel Corp, when the Court began to recognise broader grounds for using the Commerce Clause to regulate state activity.
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The Supreme Court has interpreted the Clause differently over time
The Commerce Clause is located in Article I, Section 8, Clause 3 of the United States Constitution. It grants Congress the power to "regulate Commerce with foreign Nations, and among the several States, and with the Indian Tribes." This clause has been a significant source of federal power and has been interpreted and re-interpreted by the Supreme Court over the years, often reflecting the changing economic and political landscape of the nation.
The Supreme Court has indeed interpreted the Clause differently over time, and these shifts in interpretation have had a profound impact on the balance of power between the federal government and the states. One of the earliest and most significant interpretations came in the form of a dual federalism approach, where the Court interpreted the Clause more narrowly, recognizing limits to federal power. This era, often referred to as the "Lopez era," lasted from the late 19th century to the early 20th century. During this time, the Court respected the boundaries between federal and state authority, often striking down federal laws that exceeded the commerce power.
However, with the onset of the Great Depression and the New Deal era, the Court's interpretation began to shift. The federal government needed to intervene in the economy on a scale never seen before, and the Commerce Clause became a crucial tool to justify this expansion of power. The Court adopted a more expansive interpretation, allowing for a broader reach of federal power. This shift is exemplified in cases like *Wickard v. Filburn* (1942), where the Court upheld Congress's power to regulate the production of wheat, even for personal consumption, as it could indirectly affect interstate commerce.
The post-New Deal era saw a continued broad interpretation of the Clause, with the Court often deferring to Congress's judgment on the appropriate reach of its commerce power. This era, sometimes referred to as the "anything goes" period, culminated in the landmark case of *United States v. Lopez* (1995). In this case, the Court struck down a federal law that criminalized the possession of a gun in a school zone, marking a turning point and a return to a more limited interpretation of the Clause.
Since *Lopez*, the Court has continued to refine its interpretation, seeking to define the boundaries of the commerce power more precisely. In cases like *United States v. Morrison* (2000) and *National Federation of Independent Business v. Sebelius* (2012), the Court has struck down federal laws that it deemed exceeded Congress's commerce power. These cases reflect a more nuanced approach, recognizing limits while still allowing for a substantial federal regulatory role.
In conclusion, the Commerce Clause has been a dynamic and evolving aspect of the Constitution, with the Supreme Court's interpretation reflecting the changing needs and priorities of the nation. While the Clause has been interpreted broadly at times to meet economic and social challenges, the Court has also recognized the importance of maintaining a balance between federal and state power, occasionally reining in federal overreach. This ongoing interpretation and re-interpretation of the Clause demonstrate the flexibility and adaptability of the Constitution to changing circumstances.
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Frequently asked questions
The Commerce Clause is located in Article I, Section 8, Clause 3 of the US Constitution.
The Commerce Clause gives Congress the power "to regulate commerce with foreign nations, among states, and with the Indian tribes."
The Commerce Clause has been used by Congress to justify exercising legislative power over the activities of states and their citizens. It is viewed as both a grant of congressional authority and a restriction on the regulatory authority of the states.
The Commerce Clause has been invoked in numerous court cases, including:
- Gibbons v. Ogden (1824)
- Hammer v. Dagenhart
- National Labor Relations Board v. Jones & Laughlin Steel Corp.
- Heart of Atlanta Motel v. United States
- Hicklin v. Orbeck
























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