The Constitution of the United States is the supreme law of the United States. It superseded the Articles of Confederation, the nation's first constitution, on March 4, 1789. Originally including seven articles, the Constitution delineates the frame of the federal government. The Constitution's first three articles embody the doctrine of the separation of powers, in which the federal government is divided into three branches: the legislative, consisting of the bicameral Congress ; the executive, consisting of the president and subordinate officers ; and the judicial, consisting of the Supreme Court and other federal courts. Article IV, Article V, and Article VI embody concepts of federalism, describing the rights and responsibilities of state governments, the states in relationship to the federal government, and the shared process of constitutional amendment. Article VII establishes the procedure subsequently used by the 13 states to ratify it. The Constitution of the United States is the oldest and longest-standing written and codified national constitution in force in the world.
The Tenth Amendment 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 government has only those powers delegated to it by the Constitution, and that all other powers not forbidden to the states by the Constitution are reserved to each state, or to the people.
The Fourteenth Amendment to the United States Constitution was adopted on July 9, 1868, as one of the Reconstruction Amendments. Usually considered one of the most consequential amendments, it addresses citizenship rights and equal protection under the law and was proposed in response to issues related to formerly enslaved Americans following the American Civil War. The amendment was bitterly contested, particularly by the states of the defeated Confederacy, which were forced to ratify it in order to regain representation in Congress. The amendment, particularly its first section, is one of the most litigated parts of the Constitution, forming the basis for landmark Supreme Court decisions such as Brown v. Board of Education (1954) regarding racial segregation, Loving v. Virginia (1967) regarding interracial marriage, Roe v. Wade (1973) regarding abortion, Bush v. Gore (2000) regarding the 2000 presidential election, Obergefell v. Hodges (2015) regarding same-sex marriage, and Students for Fair Admissions v. Harvard (2023) regarding race-based college admissions. The amendment limits the actions of all state and local officials, and also those acting on behalf of such officials.
The Fifteenth Amendment to the United States Constitution prohibits the federal government and each state from denying or abridging a citizen's right to vote "on account of race, color, or previous condition of servitude." It was ratified on February 3, 1870, as the third and last of the Reconstruction Amendments.
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 on August 6, 1965, and Congress later amended the Act five times to expand its protections. Designed to enforce the voting rights protected by the Fourteenth and Fifteenth Amendments to the United States Constitution, the Act sought to secure the right to vote for racial minorities throughout the country, especially in the South. According to the U.S. Department of Justice, the Act is considered to be the most effective piece of federal civil rights legislation ever enacted in the country. The National Archives and Records Administration stated: "The Voting Rights Act of 1965 was the most significant statutory change in the relationship between the federal and state governments in the area of voting since the Reconstruction period following the Civil War".
A Congressional power of enforcement is included in a number of amendments to the United States Constitution. The language "The Congress shall have power to enforce this article by appropriate legislation" is used, with slight variations, in Amendments XIII, XIV, XV, XIX, XXIII, XXIV, and XXVI.
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 Tenth Amendment. The enumerated powers that are listed in the Constitution include exclusive federal powers, as well as concurrent powers that are shared with the states, and all of those powers are contrasted with the reserved powers—also called states' rights—that only the states possess. Since the 1940s, the term "states' rights" has often been considered a loaded term or dog whistle because of its use in opposition to federally-mandated racial desegregation and, more recently, same-sex marriage and reproductive rights.
United States v. Cruikshank, 92 U.S. 542 (1876), was a landmark decision of the United States Supreme Court ruling that the U.S. Bill of Rights did not limit the power of private actors or state governments despite the adoption of the Fourteenth Amendment. It reversed the federal criminal convictions for the civil rights violations committed in aid of anti-Reconstruction murders. Decided during the Reconstruction Era, the case represented a major defeat for federal efforts to protect the civil rights of African Americans.
City of Boerne v. Flores, 521 U.S. 507 (1997), was a landmark decision of the Supreme Court of the United States concerning the scope of Congress's power of enforcement under Section 5 of the Fourteenth Amendment. The case also had a significant impact on historic preservation.
Katzenbach v. Morgan, 384 U.S. 641 (1966), was a landmark decision of the Supreme Court of the United States regarding the power of Congress, pursuant to Section 5 of the Fourteenth Amendment, to enact laws that enforce and interpret provisions of the Constitution.
In the United States, judicial review is the legal power of a court to determine if a statute, treaty, or administrative regulation contradicts or violates the provisions of existing law, a State Constitution, or ultimately the United States Constitution. While the U.S. Constitution does not explicitly define the power of judicial review, the authority for judicial review in the United States has been inferred from the structure, provisions, and history of the Constitution.
Nullification, in United States constitutional history, is a legal theory that a state has the right to nullify, or invalidate, any federal laws which they deem unconstitutional with respect to the United States Constitution. There are similar theories that any officer, jury, or individual may do the same. The theory of state nullification has never been legally upheld by federal courts, although jury nullification has.
Northwest Austin Municipal Utility District No. 1 v. Holder, 557 U.S. 193 (2009), was a decision of the United States Supreme Court regarding Section 5 of the Voting Rights Act of 1965, and in particular its requirement that proposed electoral-law changes in certain states must be approved by the federal government. In a 9–0 decision, the Court concluded that the district was eligible to apply for an exemption (bailout) from this section per Section 4(a), because the definition of "political subdivision" in Section 14(c)(2) included a district of this nature. In an 8–1 opinion, the Court declined to rule on the constitutionality of that provision, citing the principle of constitutional avoidance.
The constitutional law of the United States is the body of law governing the interpretation and implementation of the United States Constitution. The subject concerns the scope of power of the United States federal government compared to the individual states and the fundamental rights of individuals. The ultimate authority upon the interpretation of the Constitution and the constitutionality of statutes, state and federal, lies with the Supreme Court of the United States.
Shelby County v. Holder, 570 U.S. 529 (2013), was a landmark decision of the Supreme Court of the United States regarding the constitutionality of two provisions of the Voting Rights Act of 1965: Section 5, which requires certain states and local governments to obtain federal preclearance before implementing any changes to their voting laws or practices; and subsection (b) of Section 4, which contains the coverage formula that determines which jurisdictions are subject to preclearance based on their histories of racial discrimination in voting.
The U.S. Congress enacted major amendments to the Voting Rights Act of 1965 in 1970, 1975, 1982, 1992, and 2006. Each of these amendments coincided with an impending expiration of some of the Act's special provisions, which originally were set to expire by 1970. However, in recognition of the voting discrimination that continued despite the Act, Congress repeatedly amended the Act to reauthorize the special provisions.
Presley v. Etowah County Commission, 502 U.S. 491 (1992), was a United States Supreme Court voting rights case where the Court held by a 6—3 majority that the abolition of road districts did not violate the Fifteenth Amendment or the Voting Rights Act of 1965.
Ex parte Yarbrough, 110 U.S. 651 (1884), was a decision of the Supreme Court of the United States involving Congress's power to punish individuals who interfere with the right to vote in federal elections. The Court sustained the convictions of Jasper Yarbrough and seven others, who had been found guilty of beating and injuring an African-American man to prevent him from voting. The decision marked one of the few times that the post-Reconstruction Court upheld Congress's ability to protect civil rights.
