How did the court case McCulloch v. Maryland show the power of the Supremacy Clause?

To score well on your AP® U.S. Government and Politics Exam, it is important to become familiar with all of the required Supreme Court cases. In the free-response section of your AP U.S. Government Exam, you will have to answer four essay questions. The third of these questions is a SCOTUS comparison essay, in which you will be required to compare a non-required Supreme Court case with a required Supreme Court case, so get to know each required Supreme Court case as well as possible!

The required Supreme Court cases for the AP U.S. Government and Politics Exam  in 2021 are:

Marbury v. Madison (1803)
McCulloch v. Maryland (1819)
Schenck v. the United States (1919)
Brown v. Board of Education (1954)
Engel v. Vitale (1962)
Baker v. Carr (1962)
Gideon v. Wainwright (1963)
Tinker v. Des Moines Independent Community School District (1969)
New York Times Co. v. United States (1971)
Wisconsin v. Yoder (1972)
Roe v. Wade (1973)
Shaw v. Reno (1993)
United States v. Lopez (1995)
McDonald v. Chicago (2010)
Citizens United v. Federal Election Commission (2010)

McCulloch v. Maryland is one of the required Supreme Court cases for AP U.S. Government and Politics. This court case resulted in the decision that established the supremacy of the Constitution, the expansion of Congress’ powers beyond those enumerated, and the inferior status of state laws in relation to federal laws.


Controversy existed surrounding the legitimacy of a national bank since Alexander Hamilton proposed its creation in 1791 and it was chartered that same year. Hamilton, who favored a strong federal government, argued that Congress could do whatever was necessary to stimulate economic growth and recover from debts incurred during the Revolutionary War. Thomas Jefferson, who opposed the bank, argued that the creation of a national bank was not granted under the enumerated powers of the Constitution and that the Congress’ action was illegitimate.

In the aftermath of the War of 1812, there was a revival of support for a strong central bank, and the Second Bank of the United States was chartered in 1816. In 1818, the state of Maryland imposed taxes on the national bank and a Baltimore branch cashier named James McCulloch refused to pay those taxes. The state of Maryland sued McCulloch, and McCulloch, arguing that the state tax was illegitimate, took his case to the Supreme Court after a state appeals court ruled against him.


In a unanimous opinion, the Court ruled that the Second Bank of the United States’ charter was constitutionally legitimate, while the state of Maryland’s tax on that bank was illegitimate. Chief Justice John Marshall argued that while the creation of a national bank was not an enumerated power granted to the Congress by the Constitution, it is an implied power (the Constitution explicitly grants the Congress the power to levy money and regulate currency). Furthermore, the Court ruled that Maryland’s tax was an unconstitutional attempt to violate federal supremacy and that states could not interfere with federal powers.


The decision in McCulloch v. Maryland has impacted innumerable subsequent cases dealing with American federalism and the scope of governmental authority. It established that the federal government has the authority to act beyond what is explicitly outlined in the Constitution, and it cemented the supremacy of federal over state law.

How did the court case McCulloch v. Maryland show the power of the Supremacy Clause?
$1,000 note from Bank of the United States, 1840


There is no precedent for McCulloch v. Maryland, but nearly every subsequent case dealing with the scope of federal power rests upon the foundation laid in this case.


Federalism The system of distributing power between state and national governmental institutions.
Supremacy Clause The clause within the Constitution that makes the Constitution and federal laws stemming from it authoritative over all other laws.
Necessary and Proper Clause The clause within the Constitution that authorizes Congress to make laws necessary to fulfill its other duties established by the Constitution.
Implied Powers Powers of the government that are not explicitly granted by the Constitution (the enumerated powers) but implied by the Necessary and Proper Clause.

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Download your free AP U.S. Government and Politics practice test HERE.
Download your printable study guide for all of the required Supreme Court cases HERE.

How did McCulloch v Maryland use the Supremacy Clause?

Additionally, the Supremacy Clause in the Constitution makes federal laws supreme to state laws, and thus prohibits states from enacting laws contrary to federal laws. Consequently, Maryland's tax was unconstitutional.

How did the Supreme Court assert federal power over the states in McCulloch v Maryland?

The Supreme Court, however, decided that the chartering of a bank was an implied power of the Constitution, under the “elastic clause,” which granted Congress the authority to “make all laws which shall be necessary and proper for carrying into execution” the work of the Federal Government.

What clause was used in McCulloch v Maryland?

Maryland, 17 U.S. 316 (1819) States cannot interfere with the federal government when it uses its implied powers under the Necessary and Proper Clause to further its express constitutional powers.

How did the 1819 Supreme Court decision in McCulloch v Maryland increase the power of Congress Brainly?

The Supreme Court case McCulloch v. Maryland established that Congress had the power to establish a national bank and that a state (in this case, Maryland) did not have the power to tax branches of the federal government that are carrying out powers legal in the Constitution.