Supremacy Clause
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The Supremacy Clause of the
Constitution of the United States The Constitution of the United States is the supreme law of the United States of America. It superseded the Articles of Confederation, the nation's first constitution, in 1789. Originally comprising seven articles, it delineates the natio ...
( Article VI, Clause 2) establishes that the Constitution, federal laws made pursuant to it, and
treaties A treaty is a formal, legally binding written agreement between actors in international law. It is usually made by and between sovereign states, but can include international organizations, individuals, business entities, and other legal pers ...
made under its authority, constitute the "supreme Law of the Land", and thus take priority over any conflicting state laws. It provides that state courts are bound by, and state constitutions subordinate to, the supreme law. However, federal statutes and treaties must be within the parameters of the Constitution; that is, they must be pursuant to the federal government's enumerated powers, and not violate other constitutional limits on federal power, such as the
Bill of Rights A bill of rights, sometimes called a declaration of rights or a charter of rights, is a list of the most important rights to the citizens of a country. The purpose is to protect those rights against infringement from public officials and pri ...
—of particular interest is the
Tenth Amendment to the United States Constitution The Tenth Amendment (Amendment X) to the United States Constitution, a part of the Bill of Rights, was ratified on December 15, 1791. It expresses the principle of federalism, also known as states' rights, by stating that the federal govern ...
, which states that the federal government has only those powers delegated to it by the Constitution. The Supremacy Clause is essentially a conflict-of-laws rule specifying that certain federal acts take priority over any state acts that conflict with federal law. Some jurists further argue that the clause also nullifies federal law that is in conflict with the Constitution, although this is disputed. The Supremacy Clause follows Article XIII of the
Articles of Confederation The Articles of Confederation and Perpetual Union was an agreement among the 13 Colonies of the United States of America that served as its first frame of government. It was approved after much debate (between July 1776 and November 1777) by ...
, the predecessor of the Constitution, which provided that "Every
State State may refer to: Arts, entertainment, and media Literature * ''State Magazine'', a monthly magazine published by the U.S. Department of State * ''The State'' (newspaper), a daily newspaper in Columbia, South Carolina, United States * ''Our S ...
shall abide by the determination of the ongress on all questions which by this confederation are submitted to them." As a constitutional provision announcing the supremacy of federal law, the Supremacy Clause assumes the underlying priority of federal authority, albeit only when that authority is expressed in the Constitution itself; no matter what the
federal Federal or foederal (archaic) may refer to: Politics General *Federal monarchy, a federation of monarchies *Federation, or ''Federal state'' (federal system), a type of government characterized by both a central (federal) government and states or ...
or
state governments A state government is the government that controls a subdivision of a country in a federal form of government, which shares political power with the federal or national government. A state government may have some level of political autonomy, or ...
might wish to do, they must stay within the boundaries of the Constitution. Consequently, the Supremacy Clause is considered a cornerstone of the United States' federal political structure.


Text


Background


Constitutional Convention

According to Madison's
Notes of Debates in the Federal Convention of 1787 ''Notes of Debates in the Federal Convention of 1787'' was James Madison's record of the daily debates held by delegates at the Philadelphia Convention, which resulted in the drafting of the current United States Constitution. Madison's journal ...
, the Supremacy Clause was introduced as part of the
New Jersey Plan The New Jersey Plan (also known as the Small State Plan or the Paterson Plan) was a proposal for the structure of the United States Government presented during the Constitutional Convention of 1787. Principally authored by William Paterson of Ne ...
. During the debate, it was first put up for a motion by
Luther Martin Luther Martin (February 20, 1748, New Brunswick, New Jersey – July 10, 1826, New York, New York) was a politician and one of the Founding Fathers of the United States, who left the Constitutional Convention early because he felt the Cons ...
on July 17th, when it passed unanimously. During Pennsylvania's ratifying convention in late 1787, James Wilson stated, "the power of the Constitution predominates. Anything, therefore, that shall be enacted by Congress contrary thereto, will not have the force of law."


''The Federalist Papers''

In
Federalist No. 33 Federalist No. 33, written by Alexander Hamilton and published in '' The Independent Journal'' on January 2, 1788, continues the focus on the issues in creating an efficient taxation system, along with reassuring the people's doubts about the g ...
,
Alexander Hamilton Alexander Hamilton (January 11, 1755 or 1757July 12, 1804) was an American military officer, statesman, and Founding Father who served as the first United States secretary of the treasury from 1789 to 1795. Born out of wedlock in Charlest ...
writes about the Supremacy Clause that federal laws by definition must be supreme. If the laws do not function from that position, then they amount to nothing, noting that "A law, by the very meaning of the term, includes supremacy. It is a rule which those to whom it is prescribed are bound to observe. This results from every political association. If individuals enter into a state of society, the laws of that society must be the supreme regulator of their conduct. If a number of political societies enter into a larger political society, the laws which the latter may enact, pursuant to the powers entrusted to it by its constitution, must necessarily be supreme over those societies, and the individuals of whom they are composed." In Federalist No. 44,
James Madison James Madison Jr. (March 16, 1751June 28, 1836) was an American statesman, diplomat, and Founding Father. He served as the fourth president of the United States from 1809 to 1817. Madison is hailed as the "Father of the Constitution" for hi ...
defends the Supremacy Clause as vital to the functioning of the nation. He noted that state legislatures were invested with all powers not specifically defined in the Constitution, but also said that having the federal government subservient to various state constitutions would be an inversion of the principles of government, concluding that if supremacy were not established "it would have seen the authority of the whole society everywhere subordinate to the authority of the parts; it would have seen a monster, in which the head was under the direction of the members". Alexander Hamilton, wrote in Federalist #78 that, "There is no position which depends on clearer principles, than that every act of a delegated authority, contrary to the tenor of the commission under which it is exercised, is void. No legislative act, therefore, contrary to the Constitution, can be valid."


Preemption doctrine

The constitutional principle derived from the Supremacy Clause is
federal preemption In the law of the United States, federal preemption is the invalidation of a U.S. state law that conflicts with federal law. Constitutional basis According to the Supremacy Clause (Article VI, clause 2) of the United States Constitution, This ...
. Preemption applies regardless of whether the conflicting laws come from legislatures, courts, administrative agencies, or constitutions. For example, the
Voting Rights Act of 1965 The Voting Rights Act of 1965 is a landmark piece of federal legislation in the United States that prohibits racial discrimination in voting. It was signed into law by President Lyndon B. Johnson during the height of the civil rights movement ...
, an act of Congress, preempts state constitutions, and
Food and Drug Administration The United States Food and Drug Administration (FDA or US FDA) is a List of United States federal agencies, federal agency of the United States Department of Health and Human Services, Department of Health and Human Services. The FDA is respon ...
regulations may preempt state court judgments in cases involving
prescription drug A prescription drug (also prescription medication or prescription medicine) is a pharmaceutical drug that legally requires a medical prescription to be dispensed. In contrast, over-the-counter drugs can be obtained without a prescription. The rea ...
s. Congress has preempted state regulation in many areas. In some cases, such as the 1976
Medical Device Regulation Act The Medical Device Regulation Act or Medical Device Amendments of 1976 was introduced by the 94th Congress of the United States. Congressman Paul G. Rogers and Senator Edward M. Kennedy were the chairperson sponsors of the medical device amendme ...
, Congress preempted all state regulation. In others, such as labels on prescription drugs, Congress allowed federal
regulatory agencies A regulatory agency (regulatory body, regulator) or independent agency (independent regulatory agency) is a government authority that is responsible for exercising autonomous dominion over some area of human activity in a licensing and regulatin ...
to set federal minimum standards but did not preempt state regulations imposing more stringent standards than those imposed by federal regulators. Where rules or regulations do not clearly state whether or not preemption should apply, the
Supreme Court A supreme court is the highest court within the hierarchy of courts in most legal jurisdictions. Other descriptions for such courts include court of last resort, apex court, and high (or final) court of appeal. Broadly speaking, the decisions of ...
tries to follow lawmakers’ intent and prefers interpretations that avoid preempting state laws.


Subsequent federal case law

''
Chy Lung v. Freeman ''Chy Lung v. Freeman'', 92 U.S. 275 (1876), was a US Supreme Court case that ruled that the powers to set rules surrounding immigration and to manage foreign relations rest with the US federal government, rather than that of the states.. The case ...
'' was brought to court when a passenger arriving in California on the Chinese vessel "Japan" was detained by the Commissioner of Immigration on the charge of being included by a state statute in the caste of "lewd and debauched women," which require separate bonds from the owner of the vessel they came on in order to land on California's coast. The Supreme Court ruled against the plaintiff's detention on the basis that the statute preempted the federal legislation's ability to regulate the "admission of citizens and subjects of foreign nations to our shores". '' LULAC v. Wilson'' was brought to the Supreme Court in order to determine the constitutionality of California's Proposition 187, which the League of United Latin American Citizens argued was preempted by the federal government's authority over the regulation of foreign nationals in America. Proposition 187 was meant to assist cooperative efforts undertaken by national and sub-national governments to place stricter restrictions on undocumented immigrants "from receiving benefits or public services in the State of California". The Court decided that only a small portion of Preposition 187 was not preempted by the Personal Responsibility and Work Opportunity Reconciliation Act of 1996''.'' '' Villas at Parkside Partners v. City of Farmers Branch'' dealt with an ordinance passed by the City of Farmers Branch. Ordinance 2952 forced individuals seeking to reside in a "rented apartment or 'single-family residence.'" need to obtain a license first. The Court ruled that Ordinance 2952 did in fact conflict with preexisting federal law and thus affirmed the lower court's decision.


Treaties

The supremacy of treaties over state law has been described as an "unquestioned axiom of the founding" of the United States. Under the Supremacy Clause, treaties and federal statutes are equally regarded as "supreme law of the land" with "no superior efficacy ... given to either over the other". Thus, international agreements made pursuant to the
Treaty Clause The Treaty Clause of the United States Constitution (Article II, Section 2, Clause 2) establishes the procedure for ratifying international agreements. It empowers the President as the primary negotiator of agreements between the United States ...
—namely, ratified with the
advice and consent Advice and consent is an English phrase frequently used in enacting formulae of bills and in other legal or constitutional contexts. It describes either of two situations: where a weak executive branch of a government enacts something previo ...
of a two-thirds
supermajority A supermajority, supra-majority, qualified majority, or special majority is a requirement for a proposal to gain a specified level of support which is greater than the threshold of more than one-half used for a simple majority. Supermajority ru ...
of the
Senate A senate is a deliberative assembly, often the upper house or chamber of a bicameral legislature. The name comes from the ancient Roman Senate (Latin: ''Senatus''), so-called as an assembly of the senior (Latin: ''senex'' meaning "the el ...
—are treaties in the constitutional sense and thereby incorporated into
U.S. federal law The law of the United States comprises many levels of codified and uncodified forms of law, of which the most important is the nation's Constitution, which prescribes the foundation of the federal government of the United States, as well as va ...
no differently than an
act of Congress An Act of Congress is a statute enacted by the United States Congress. Acts may apply only to individual entities (called Public and private bills, private laws), or to the general public (Public and private bills, public laws). For a Bill (law) ...
. Treaties are likewise subject to judicial interpretation and
review A review is an evaluation of a publication, product, service, or company or a critical take on current affairs in literature, politics or culture. In addition to a critical evaluation, the review's author may assign the work a content rating, ...
just as any federal statute, and courts have consistently recognized them as legally binding under the Constitution. The
U.S. Supreme Court The Supreme Court of the United States (SCOTUS) is the highest court in the federal judiciary of the United States. It has ultimate appellate jurisdiction over all U.S. federal court cases, and over state court cases that involve a point o ...
applied the Supremacy Clause for the first time in the 1796 case, '' Ware v. Hylton,'' ruling that a treaty superseded conflicting state law. The Court held that both states and private citizens were bound to comply with the treaty obligations of the federal government, which was in turn bound by the "
law of nations International law (also known as public international law and the law of nations) is the set of rules, norms, and standards generally recognized as binding between states. It establishes normative guidelines and a common conceptual framework for ...
" to honor treaties. Shortly thereafter, in the 1801 case, ''United States v. The Schooner Peggy,'' the court ruled in favor of a private citizen's lawsuit against the government on the basis of a treaty, and for the first time elaborated upon supreme nature of ratified treaties:
ere a treaty is the law of the land, and as such affects the rights of parties litigating in court, that treaty as much binds those rights and is as much to be regarded by the court as an act of congress; and although restoration may be an executive, when viewed as a substantive act, independent of and unconnected with other circumstances, yet to condemn a vessel, the restoration of which is directed by a law of the land, would be a direct infraction of that law, and of consequence improper.
In ''Foster v. Nielson'' (1829),
Chief Justice John Marshall ''Chief Justice John Marshall'' is a bronze sculpture of John Marshall, by American sculptor William Wetmore Story. It is located at the Supreme Court, 1 First Street, Northeast, Washington, D.C. It was dedicated on May 10, 1884, by Morrison Wa ...
, writing for the majority, affirmed that a treaty is constitutionally the "law of the land" but for the first time articulated the difference between self-executing and non-self-executing agreements with respect to domestic law:
Our constitution declares a treaty to be the law of the land. It is, consequently, to be regarded in courts of justice as equivalent to an act of the legislature, whenever it operates of itself, without the aid of any legislative provision. But when the terms of the stipulation import a contract—when either of the parties engages to perform a particular act, the treaty addresses itself to the political, not the judicial department; and the legislature must execute the contract, before it can become a rule for the court.
While it is generally agreed by constitutional scholars that treaties are as binding as domestic federal law, courts have differed on the enforceability of some types of international agreements and on the precise scope of a treaty's legal obligations. Beginning with the 1884 Head Money Cases, the Supreme Court has consistently held that Congress can abrogate a treaty by legislative action even if this amounts to a violation of the treaty under international law; indeed, courts will enforce congressional modifications of a treaty regardless of whether foreign actors still consider the treaty to be binding on the U.S. Nevertheless, in ''
Missouri v. Holland ''Missouri v. Holland'', 252 U.S. 416 (1920) is a United States Supreme Court decision on the extent to which international legal obligations are incorporated into federal law.. The case centered on the constitutionality of the Migratory Bird Tre ...
'' (1920), the Supreme Court held that the Supremacy Clause allows the federal government to make
treaties A treaty is a formal, legally binding written agreement between actors in international law. It is usually made by and between sovereign states, but can include international organizations, individuals, business entities, and other legal pers ...
that supersede state law even if such treaties might abrogate states' rights arising under the Tenth Amendment. The decision implied that treaties can be used to legislate in areas otherwise within the exclusive authority of the states, and by extension in areas not within the scope of the federal government or its branches. However, ''Missouri'''s potentially broad interpretation was circumscribed in the 1957 case, '' Reid v. Covert,'' when the Supreme Court held that treaties and the laws made pursuant to them must comply with the Constitution. The enforceability of treaties was further limited in the 2008 Supreme Court decision in '' Medellín v. Texas'', which held that even if a treaty may constitute an international commitment, it is not binding domestic law unless it has been implemented by an act of Congress or is itself explicitly " self-executing". Law scholars called the ruling "an invisible constitutional change" that departed from both longtime historical practice and the plain language of the Supremacy Clause.


Supreme Court interpretations

In ''
Marbury v. Madison ''Marbury v. Madison'', 5 U.S. (1 Cranch) 137 (1803), was a List of landmark court decisions in the United States, landmark Supreme Court of the United States, U.S. Supreme Court case that established the principle of Judicial review in the Uni ...
'', 5 U.S. 137 (1803), the Supreme Court held that Congress cannot pass laws that are contrary to the Constitution, and it is the role of the Judicial system to interpret what the Constitution permits. Citing the Supremacy Clause, the Court found Section 13 of the
Judiciary Act of 1789 The Judiciary Act of 1789 (ch. 20, ) was a United States federal statute enacted on September 24, 1789, during the first session of the First United States Congress. It established the federal judiciary of the United States. Article III, Secti ...
to be unconstitutional to the extent it purported to enlarge the original jurisdiction of the Supreme Court beyond that permitted by the Constitution. In ''
Martin v. Hunter's Lessee ''Martin v. Hunter's Lessee'', 14 U.S. (1 Wheat.) 304 (1816), was a landmark decision of the Supreme Court of the United States decided on March 20, 1816. It was the first case to assert ultimate Supreme Court authority over state courts in civil ...
'', 14 U.S. 304 (1816), and ''
Cohens v. Virginia ''Cohens v. Virginia'', 19 U.S. (6 Wheat.) 264 (1821), is a List of landmark court decisions in the United States, landmark case by the Supreme Court of the United States that is most notable for the Court's assertion of its power to review state s ...
'', 19 U.S. 264 (1821), the Supreme Court held that the Supremacy Clause and the judicial power granted in Article III give the Supreme Court the ultimate power to review state court decisions involving issues arising under the Constitution and laws of the United States. Therefore, the Supreme Court has the final say in matters involving federal law, including constitutional interpretation, and can overrule decisions by state courts. In '' McCulloch v. Maryland'', 17 U.S. (4 Wheat.) 316 (1819), the Supreme Court reviewed a tax levied by
Maryland Maryland ( ) is a state in the Mid-Atlantic region of the United States. It shares borders with Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware and the Atlantic Ocean to ...
on the federally incorporated Bank of the United States. The Court found that if a state had the power to tax a federally incorporated institution, then the state effectively had the power to destroy the federal institution, thereby thwarting the intent and purpose of Congress. This would make the states superior to the federal government. The Court found that this would be inconsistent with the Supremacy Clause, which makes federal law superior to state law. The Court therefore held that Maryland's tax on the bank was unconstitutional because the tax violated the Supremacy Clause. In ''
Ableman v. Booth ''Ableman v. Booth'', 62 U.S. (21 How.) 506 (1859), was a United States Supreme Court case in which the Court unanimously held that state courts cannot issue rulings that contradict the decisions of federal courts,Hoiberg, Dale H. (2010) overt ...
'', 62 U.S. 506 (1859), the Supreme Court held that state courts cannot issue rulings that contradict the decisions of federal courts, citing the Supremacy Clause, and overturning a decision by the Supreme Court of
Wisconsin Wisconsin () is a state in the upper Midwestern United States. Wisconsin is the 25th-largest state by total area and the 20th-most populous. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake M ...
. Specifically, the court found it was illegal for state officials to interfere with the work of U.S. Marshals enforcing the
Fugitive Slave Act A fugitive (or runaway) is a person who is fleeing from custody, whether it be from jail, a government arrest, government or non-government questioning, vigilante violence, or outraged private individuals. A fugitive from justice, also kno ...
or to order the release of federal prisoners held for violation of that Act. The Supreme Court reasoned that because the Supremacy Clause established federal law as the law of the land, the Wisconsin courts could not nullify the judgments of a federal court. The Supreme Court held that under Article III of the Constitution, the federal courts have the final jurisdiction in all cases involving the Constitution and laws of the United States, and that the states therefore cannot interfere with federal court judgments. In '' Pennsylvania v. Nelson'', 350 U.S. 497 (1956) the Supreme Court struck down the
Pennsylvania Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, ...
Sedition Act, which made advocating the forceful overthrow of the federal government a crime under Pennsylvania state law. The Supreme Court held that when federal interest in an area of law is sufficiently dominant, federal law must be assumed to preclude enforcement of state laws on the same subject; and a state law is not to be declared a help when state law goes farther than Congress has seen fit to go. In ''
Cooper v. Aaron ''Cooper v. Aaron'', 358 U.S. 1 (1958), was a landmark decision of the Supreme Court of the United States, which denied the school board of Little Rock, Arkansas, the right to delay racial desegregation for 30 months. On September 12, 1958, th ...
'', 358 U.S. 1 (1958), the Supreme Court rejected attempts by
Arkansas Arkansas ( ) is a landlocked state in the South Central United States. It is bordered by Missouri to the north, Tennessee and Mississippi to the east, Louisiana to the south, and Texas and Oklahoma to the west. Its name is from the Osage ...
to nullify the Court's school desegregation decision, ''
Brown v. Board of Education ''Brown v. Board of Education of Topeka'', 347 U.S. 483 (1954), was a landmark decision by the U.S. Supreme Court, which ruled that U.S. state laws establishing racial segregation in public schools are unconstitutional, even if the segrega ...
''. The state of Arkansas, acting on a theory of
states' rights In American political discourse, states' rights are political powers held for the state governments rather than the federal government according to the United States Constitution, reflecting especially the enumerated powers of Congress and the ...
, had adopted several statutes designed to nullify the desegregation ruling. The Supreme Court relied on the Supremacy Clause to hold that the federal law controlled and could not be nullified by state statutes or officials. In '' Edgar v. MITE Corp.'', , the Supreme Court ruled: "A state statute is void to the extent that it actually conflicts with a valid Federal statute". In effect, this means that a state law will be found to violate the Supremacy Clause when either of the following two conditions (or both) exist: # Compliance with both the Federal and State laws is impossible # "State law stands as an obstacle to the accomplishment and execution of the full purposes and objectives of Congress" The Supreme Court has also held that only specific, "unmistakable" acts of Congress may be held to trigger the Supremacy Clause.
Montana Montana () is a state in the Mountain West division of the Western United States. It is bordered by Idaho to the west, North Dakota and South Dakota to the east, Wyoming to the south, and the Canadian provinces of Alberta, British Columbi ...
had imposed a 30 percent tax on most sub-bituminous coal mined there. The
Commonwealth Edison Company Commonwealth Edison, commonly known by syllabic abbreviation as ComEd, is the largest electric utility in Illinois, and the in Chicago and much of Northern Illinois. Its service territory stretches roughly from Iroquois County on the south to ...
and other
utility companies A public utility company (usually just utility) is an organization that maintains the infrastructure for a public service (often also providing a service using that infrastructure). Public utilities are subject to forms of public control and ...
argued, in part, that the Montana tax "frustrated" the broad goals of the federal energy policy. However, in the case of ''
Commonwealth Edison Co. v. Montana ''Commonwealth Edison Co. v. Montana'', 453 U.S. 609 (1981), is a 6-to-3 ruling by the Supreme Court of the United States that held that a severance tax in Montana does not violate the Commerce Clause or the Supremacy Clause of the United States ...
'', , the Supreme Court disagreed. Any appeal to claims about "national policy", the Court said, were insufficient to overturn a state law under the Supremacy Clause unless "the nature of the regulated subject matter permits no other conclusion, or that the Congress has unmistakably so ordained". However, in the case of '' California v. ARC America Corp.'', , the Supreme Court held that if Congress expressly ''intended'' to act in an area, this would trigger the enforcement of the Supremacy Clause, and hence nullify the state action. The Supreme Court further found in '' Crosby v. National Foreign Trade Council'', , that even when a state law is not in direct conflict with a federal law, the state law could still be found unconstitutional under the Supremacy Clause if the "state law is an obstacle to the accomplishment and execution of Congress's full purposes and objectives". Congress need not expressly assert any preemption over state laws either, because Congress may implicitly assume this preemption under the Constitution.''Crosby v. National Foreign Trade Council'', 530 U.S. 363, 386-388.


See also

*
Federal preemption In the law of the United States, federal preemption is the invalidation of a U.S. state law that conflicts with federal law. Constitutional basis According to the Supremacy Clause (Article VI, clause 2) of the United States Constitution, This ...
* Intergovernmental immunity *
Interposition Interposition is a claimed right of a U.S. state to oppose actions of the federal government that the state deems unconstitutional. Under the theory of interposition, a state assumes the right to "interpose" itself between the federal government a ...
*
Necessary and Proper Clause The Necessary and Proper Clause, also known as the Elastic Clause, is a clause in Article I, Section 8 of the United States Constitution: Since the landmark decision '' McCulloch v. Maryland'', the US Supreme Court has ruled that this clause gr ...
*
States' rights In American political discourse, states' rights are political powers held for the state governments rather than the federal government according to the United States Constitution, reflecting especially the enumerated powers of Congress and the ...
*
Section 109 of the Constitution of Australia Section 109 of the Constitution of Australia is the part of the Constitution of Australia that deals with the legislative inconsistency between federal and state laws, and declares that valid federal laws override ("shall prevail") inconsistent ...
– analogous section of the
Constitution of Australia The Constitution of Australia (or Australian Constitution) is a written constitution, constitutional document that is Constitution, supreme law in Australia. It establishes Australia as a Federation of Australia, federation under a constitutio ...
*
Paramountcy (Canada) In Canadian constitutional law, the doctrine of paramountcy (french: prépondérance fédérale) establishes that where there is a conflict between valid provincial and federal laws, the federal law will prevail and the provincial law will be ino ...
– analogous doctrine in
Canadian constitutional law Canadian constitutional law () is the area of Canadian law relating to the interpretation and application of the Constitution of Canada by the courts. All laws of Canada, both provincial and federal, must conform to the Constitution and any laws i ...
* Primacy of European Union law – analogous doctrine in
European Union law European Union law is a system of rules operating within the member states of the European Union (EU). Since the founding of the European Coal and Steel Community following World War II, the EU has developed the aim to "promote peace, its valu ...


References

{{US Constitution Article Six of the United States Constitution Clauses of the United States Constitution Legal history of the United States