
The United States Constitution is the supreme law of the land, and any law that contradicts it is unconstitutional and has no legal force. This is according to the Supremacy Clause, which establishes that federal law takes precedence over state law in cases of conflict. The Supreme Court has the final say in interpreting the Constitution and can invalidate a statute for violating its provisions. For example, in McCulloch v. Maryland, the Supreme Court held that Maryland's tax on the federally incorporated Bank of the United States was unconstitutional as it violated the Supremacy Clause by effectively giving the state power over a federal institution.
| Characteristics | Values |
|---|---|
| When a law contradicts the constitution | The law is deemed unconstitutional |
| --- | --- |
| What happens when a law is deemed unconstitutional | The law is void and has no legal foundation |
| --- | --- |
| Who decides if a law is unconstitutional | The Supreme Court |
| --- | --- |
| What is the principle that gives the Supreme Court this power | The Supremacy Clause |
| --- | --- |
| What is the Supremacy Clause | A constitutional provision that establishes the supremacy of federal law over state law |
| --- | --- |
| What happens when federal law contradicts state law | Federal law takes priority |
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What You'll Learn

Federal law takes priority over state law
In the United States, the Supremacy Clause, found in Article VI, section 2 of the U.S. Constitution, establishes that the Constitution, federal laws made pursuant to it, and treaties made under the authority of the United States, take priority over any conflicting state laws. This means that federal law is supreme and that state courts and constitutions are subordinate to federal law.
The Supremacy Clause is considered a cornerstone of the United States' federal political structure. It assumes the underlying priority of federal authority, ensuring that federal acts take precedence over any conflicting state acts. This is known as federal preemption, which applies regardless of whether the conflicting laws come from legislatures, courts, administrative agencies, or constitutions. For example, the Voting Rights Act of 1965, an act of Congress, preempts state constitutions, and Food and Drug Administration regulations may preempt state court judgments in cases involving prescription drugs.
The Supreme Court has the final say in matters involving federal law, including constitutional interpretation, and can overrule decisions by state courts. In cases where Congress has not included an express provision for preemption in a statute, a court may still find that the statute preempts state law. This is known as implied preemption, which can occur when state and federal laws directly conflict with each other, or when federal laws dominate a field that a state law seeks to regulate. For instance, in Sperry v. Florida, 373 U.S. 379 (1963), the Supreme Court examined a conflict between federal patent laws and a state law governing the licensure of attorneys. The Court ruled that federal law preempted state law with regard to the person's ability to act as a patent agent in Florida, even though Congress did not expressly state its intention for federal patent law to preempt state licensure law.
Additionally, Congress has the authority to expressly preempt state law, as in the case of Arizona v. United States, 567 U.S. 387 (2012), where the Supreme Court held that federal immigration law preempted an Arizona state law penalizing undocumented immigrants working without authorization.
In conclusion, the Supremacy Clause ensures that federal law takes priority over state law, with the Supreme Court serving as the final interpreter and arbiter of conflicts between federal and state laws.
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The Supreme Court has the final say
When a law contradicts the constitution, the Supreme Court has the final say in the matter. The Supreme Court can overrule decisions by state courts and invalidate a statute for violating a provision of the Constitution. This power of judicial review is derived from the Supremacy Clause, which establishes the supremacy of federal law over state law.
The Supremacy Clause is a constitutional provision that asserts the priority of federal authority over state authority. It ensures that federal law takes precedence over any conflicting state laws or constitutions. This clause is considered a cornerstone of the United States' federal political structure, emphasizing the importance of American citizenship over state citizenship.
In McCulloch v. Maryland (1819), the Supreme Court invoked the Supremacy Clause to strike down a Maryland tax on the federally incorporated Bank of the United States. The Court reasoned that allowing states to tax federal institutions would give them the power to destroy those institutions, thereby undermining the intent of Congress and making the states superior to the federal government. This interpretation of the Supremacy Clause sets a precedent for the Supreme Court's role in interpreting and upholding the Constitution.
The Supreme Court's power to invalidate state laws that contradict the Constitution is not limited to the Supremacy Clause. In cases such as United States v. Peters (1809) and Fletcher v. Peck (1810), the Court has invoked other constitutional provisions, such as the Contracts Clause, to strike down state statutes that violated the Constitution.
Additionally, the Supreme Court's interpretation of federal statutes takes precedence over conflicting interpretations by state courts. This ensures that federal statutes are applied uniformly across the nation, maintaining the integrity of federal law and preventing state courts from undermining federal authority.
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State laws can be deemed unconstitutional
In the United States, state laws can be deemed unconstitutional. The Supremacy Clause establishes federal preemption, which means that federal law takes priority over state law. This is because federal laws are considered to be the "supreme Law of the Land", and judges in every state are bound to follow the legal directives supplied by federal statutes.
The Supremacy Clause is a cornerstone of the US federal political structure, ensuring that federal authority prevails over state authority, as long as it is expressed in the Constitution. This means that state laws cannot contravene any provision of the Constitution or conflict with federal statutes, treaties, or the powers of Congress.
When a state law contradicts a federal law, judges must follow the federal law and may deem the state law unconstitutional. This can occur in several ways. For example, in United States v. Peters (1809), a Pennsylvania statute was found to be without legal foundation as it attempted to annul the judgment of a federal court. In Fletcher v. Peck (1810), a Georgia statute violated the Contracts Clause of the Constitution.
The Supreme Court has the final say in matters of constitutional interpretation and can overrule state court decisions. For instance, in McCulloch v. Maryland (1819), the Supreme Court held that a Maryland tax on the federally incorporated Bank of the United States was unconstitutional as it violated the Supremacy Clause.
State laws can also be preempted by federal laws in certain areas, such as the Voting Rights Act of 1965 and the 1976 Medical Device Regulation Act. In these cases, state laws are not deemed unconstitutional, but rather void due to the conflict with federal statutes or treaties.
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The Supremacy Clause
The interpretation and application of the Supremacy Clause have evolved over time. During the New Deal and Warren Court eras, the Supreme Court acquiesced to expansive congressional claims of power, shifting the balance towards nationalism over federalism. This has influenced how Americans view their citizenship, with most people now considering their American citizenship more significant than their state citizenship.
While the Supremacy Clause establishes the priority of federal law, it is important to note that federal statutes and treaties must still operate within the boundaries of the Constitution. The United States Supreme Court has the power of judicial review, allowing it to invalidate any statute that violates the Constitution. This ensures that the federal government exercises only the powers delegated to it by the Constitution, as outlined in the Tenth Amendment.
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Federal preemption
When a law contradicts the constitution, the Supreme Court has the final say and can overrule decisions by state courts. This is known as the Supremacy Clause, which assumes the underlying priority of federal authority and is considered a cornerstone of the United States' federal political structure. It is included in Article VI of the U.S. Constitution.
While federal preemption usually gives precedence to federal laws, not all federal regulations preempt state regulations. As noted in the Supreme Court case of Cipollone v. Liggett Group (1992), a presumption against preemption invokes federalism and state sovereignty principles. This presumption applies to all preemption cases. The Supreme Court tries to follow lawmakers' intent and prefers interpretations that do not intrude on state sovereignty.
In conclusion, federal preemption is a crucial concept in the United States legal system, ensuring uniformity and consistency in legal matters that cross state lines. It is derived from the Supremacy Clause, which affirms the supremacy of federal law over state law in cases of conflict.
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Frequently asked questions
When a law contradicts the Constitution, the law is deemed unconstitutional and is therefore void. The Supreme Court has the final say in such matters and can overrule decisions by state courts.
Yes, in the case of *Fletcher v. Peck* (1810), a Georgia statute annulling the conveyance of public lands was found to violate the Contracts Clause (Art. I, § 10) of the US Constitution.
The Supremacy Clause establishes that federal law is supreme over state law and any law that contradicts the Constitution is void.
The Supremacy Clause is interpreted differently in this case. Some jurists argue that it nullifies federal law that conflicts with the Constitution, while others disagree. The Supreme Court has the power of judicial review and can invalidate a federal statute for violating the Constitution.
In such a case, the more recent article would take precedence, as courts traditionally handle contradictions by giving priority to the more recent statute.


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