04 The Supreme Court and Constitutional Interpretation

04 The Supreme Court and Constitutional Interpretation

The Supreme Court shapes the constitutional balance of power by deciding concrete disputes and interpreting constitutional provisions. Three cases trace a development from the judiciary’s authority to review government action, to broader congressional authority, to modern enforcement of limits on federal power.

A useful way to organize the cases is by asking three questions:

1. Who decides whether government action is constitutional?

2. What tools may Congress use to carry out its listed responsibilities?

3. How closely must federal action remain connected to an enumerated constitutional power?

The answers are illustrated by Marbury v. Madison, McCulloch v. Maryland, and United States v. Lopez.

Takeaway: Constitutional interpretation can expand the authority of one institution while simultaneously enforcing limits on another.

Judicial Review and Marbury v. Madison

At the end of President John Adams’s administration, William Marbury was appointed a justice of the peace for the District of Columbia. His commission had been signed and sealed but was not delivered before Thomas Jefferson became president. Jefferson’s secretary of state, James Madison, refused to deliver it.

Marbury asked the Supreme Court to issue a writ of mandamus, an order requiring a government official to perform a legal duty. The Court considered three questions:

1. Did Marbury have a legal right to his commission?

2. If that right had been violated, did the law provide a remedy?

3. Could the Supreme Court issue the requested writ in an original proceeding?

Chief Justice John Marshall concluded that Marbury had a right to the commission and that withholding it violated that right. However, the Court held that it lacked original jurisdiction to issue the writ in this case. Section 13 of the Judiciary Act of 1789 appeared to authorize the Supreme Court to issue such writs, but Article III did not grant the Court that power in an original proceeding of this kind. The Court therefore treated Section 13 as unconstitutional and denied Marbury’s request.

The broader principle was Judicial review: courts may determine whether government actions comply with the Constitution. Marshall reasoned that the Constitution is superior to ordinary legislation and that courts must apply the higher law when an ordinary law conflicts with it.

Judicial review rests on several connected ideas:

• The Constitution is the supreme law.

• Courts decide legal controversies.

• Judges must apply the law, including the Constitution.

• Ordinary legislation cannot override constitutional limits.

Takeaway: Marbury made constitutional interpretation part of the judicial function and established the Supreme Court as an important check on Congress and the executive branch.

Implied Powers and Federal Supremacy

Congress had chartered the Second Bank of the United States, and Maryland attempted to tax banks operating in the state that were not chartered by Maryland. James McCulloch, the cashier of the Baltimore branch of the national bank, refused to pay the tax. The case required the Court to address both congressional power and state interference with federal institutions.

The first question was whether Congress could establish the bank. The Constitution lists powers such as taxing, borrowing, regulating commerce, and raising armies. The Necessary and Proper Clause permits Congress to make laws needed to carry those powers into execution.

Chief Justice Marshall rejected the argument that “necessary” means absolutely indispensable. Congress may choose appropriate and plainly adapted means for carrying out legitimate constitutional responsibilities, as long as those means are not prohibited by the Constitution. The national bank was therefore a constitutional instrument for carrying out enumerated federal powers.

This reasoning recognized implied powers. Congress has not only powers expressly listed in the Constitution but also reasonable means for exercising those listed powers.

The second question was whether Maryland could tax the bank. Under the Supremacy Clause, valid federal laws and institutions take priority over conflicting state actions. Allowing Maryland to tax the bank could permit a state to interfere with, weaken, or destroy a federal instrument. The Court therefore held that Maryland’s tax was unconstitutional.

The decision strengthened the national government in two ways:

• It interpreted the Necessary and Proper Clause broadly enough to support effective federal action.

• It prevented states from obstructing valid federal laws or institutions.

The decision did not give Congress unlimited authority. Federal action must still be connected to an enumerated constitutional power and must not violate another constitutional prohibition.

Takeaway: McCulloch supports practical federal power while preserving the requirement that federal action remain constitutionally grounded.

The Commerce Clause and Limits on Federal Power

Alfonso Lopez, a high-school student, carried a handgun into a school zone and was prosecuted under the federal Gun-Free School Zones Act of 1990, which made it a federal offense to possess a firearm in a school zone. Lopez argued that Congress lacked authority to enact the law under the Commerce Clause.

The Court identified three broad categories of activity that Congress may regulate under the Commerce Clause:

1. Channels of interstate commerce, such as highways, waterways, and air routes.

2. Instrumentalities of interstate commerce, including vehicles, people, and goods moving across state lines.

3. Activities that substantially affect interstate commerce, especially economic activities considered in the aggregate.

The Court held that possessing a gun in a local school zone was not an economic activity and was not sufficiently connected to interstate commerce. The statute did not regulate a commercial transaction, include a jurisdictional requirement linking each prosecution to interstate commerce, or form an essential part of a broader economic regulatory program.

The government argued that school violence could indirectly affect the economy through education, productivity, and crime-related costs. The Court rejected that reasoning because accepting it would risk turning the Commerce Clause into a general federal police power.

Lopez did not eliminate broad federal authority over interstate economic activity. Instead, it required a constitutionally meaningful connection between the regulated conduct and interstate commerce. The decision also emphasized that states retain primary responsibility for many traditional areas of criminal law and public safety.

Takeaway: Lopez demonstrates that the Commerce Clause has enforceable boundaries and cannot automatically convert every local problem into a federal matter.

Comparing the Three Constitutional Decisions

The three cases demonstrate that constitutional interpretation can produce both expansive and restrictive results.

Marbury v. Madison (1803)

• Constitutional issue: Whether the Court could issue a writ under the Judiciary Act of 1789.

• Holding: The relevant statutory provision conflicted with Article III, so it could not authorize the requested writ.

• Broader principle: Courts may exercise judicial review.

McCulloch v. Maryland (1819)

• Constitutional issue: Whether Congress could charter a national bank and whether Maryland could tax it.

• Holding: The bank was constitutional, and Maryland’s tax was invalid.

• Broader principle: Congress has implied powers, and valid federal law is supreme over conflicting state action.

United States v. Lopez (1995)

• Constitutional issue: Whether Congress could prohibit gun possession near schools under the Commerce Clause.

• Holding: The statute exceeded Congress’s commerce power.

• Broader principle: Federal power has enforceable constitutional limits.

The cases can also be compared by the type of constitutional authority they address:

• Marbury concerns the judiciary’s authority to interpret and enforce the Constitution.

• McCulloch concerns Congress’s ability to use reasonable means to carry out its enumerated powers.

• Lopez concerns the boundary between national authority and matters primarily reserved to the states.

Together, they show that the Supreme Court is both an enforcer of constitutional limits and an interpreter of the federal government’s powers.

Takeaway: The cases do not point in only one direction. Marbury strengthens judicial authority, McCulloch supports effective national authority, and Lopez insists that national authority remain within constitutional boundaries.

Interpretive Methods and Core Takeaways

These decisions illustrate several methods of constitutional interpretation.

• Textual interpretation: The Court examined Article III, the Necessary and Proper Clause, the Supremacy Clause, and the Commerce Clause.

• Structural interpretation: The Court considered the division of authority among the federal branches and between the national government and the states.

• Historical interpretation: The opinions considered the constitutional design and the relationship between the Union and the states.

• Practical interpretation: McCulloch asked how the national government could effectively exercise its enumerated responsibilities.

• Limit-enforcing interpretation: Lopez insisted that federal powers remain tied to constitutional categories rather than expanding into a general police power.

A concise synthesis is:

1. Marbury established who may enforce constitutional limits through judicial review.

2. McCulloch recognized that Congress may use reasonable implied powers and protected valid federal operations from state interference.

3. Lopez required federal regulation to remain connected to an enumerated power, particularly when Congress relies on the Commerce Clause.

Final takeaway: The constitutional balance depends on both effective national authority and enforceable limits. The Supreme Court’s interpretive role helps define where those powers begin, how they operate, and where they must stop.