
The United States Constitution has been amended 27 times since it was enacted in 1789, with approximately 11,848 proposals for amendments introduced in Congress during this period. Amendments to the Constitution must be ratified by three-fourths of the states (38 since 1959) and cover a wide range of topics, from citizens' rights to taxation and election procedures. The first ten amendments, collectively known as the Bill of Rights, were ratified in 1791 and include fundamental freedoms such as the right to bear arms, freedom from cruel and unusual punishment, and the right to due process of law. Other notable amendments include the Reconstruction Amendments (the 13th, 14th, and 15th amendments), which abolished slavery and guaranteed equal protection under the law, and the 21st Amendment, which repealed the 18th Amendment and ended prohibition. The process of amending the Constitution is ongoing, with proposals for new amendments being introduced and debated regularly.
| Characteristics | Values |
|---|---|
| Number of Amendments proposed by the United States Congress | 33 |
| Number of Amendments ratified | 27 |
| First 10 Amendments | Ratified on December 15, 1791, and form what is known as the "Bill of Rights" |
| Number of proposals to amend the Constitution introduced in Congress since 1789 (as of January 3, 2019) | 11,848 |
| Amendment to repeal an earlier one | 21st Amendment (repealed 18th Amendment) |
| Date of 21st Amendment | 1933 |
| Date of 18th Amendment | 1919 |
| Subject of 18th Amendment | Prohibition of alcohol |
| Amendment that modified Article I, section 2, of the Constitution | 14th Amendment |
| Amendment that modified Amendment 14, section 2, of the Constitution | 26th Amendment |
| Date of proposal of 27th Amendment | September 25, 1789 |
| Date of ratification of 27th Amendment | May 7, 1992 |
| Subject of 15th Amendment | Right of citizens to vote |
| Subject of 16th Amendment | Income tax |
| Subject of 17th Amendment | Popular election of senators |
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What You'll Learn

The Bill of Rights
The First Amendment guarantees fundamental freedoms, including freedom of religion, speech, and the right to assemble and petition the government. The Second Amendment protects the right to bear arms, while the Third Amendment prohibits the quartering of soldiers in civilian homes without consent. The Fourth Amendment safeguards citizens against unreasonable searches and seizures, and the Fifth Amendment outlines the rights of persons in criminal cases, including protection against double jeopardy and self-incrimination.
The Sixth Amendment guarantees rights in criminal prosecutions, such as the right to a speedy trial, legal counsel, and an impartial jury. The Seventh Amendment ensures civil trial rights, including the right to a jury trial in certain civil cases. The Eighth Amendment prohibits excessive bail, fines, and cruel and unusual punishments. The Ninth Amendment addresses unenumerated rights, emphasizing that the people retain rights not specifically mentioned in the Constitution.
The Tenth Amendment, the final part of the Bill of Rights, reserves powers to the states and the people, underlining the principle of federalism and state sovereignty.
Since the Bill of Rights, 17 more amendments have been added to the Constitution, with a total of 27 amendments to date. The process of amending the Constitution is rigorous, requiring ratification by three-fourths of the states or state ratifying conventions.
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The Reconstruction Amendments
The 13th Amendment, proposed in 1864 and ratified in 1865, abolished slavery and involuntary servitude, except as punishment for a crime. It changed a portion of Article IV, Section 2 of the Constitution and gave Congress the power to enforce this article through appropriate legislation.
The 14th Amendment, proposed in 1866 and ratified in 1868, addresses citizenship rights and equal protection under the law for all persons born or naturalized in the United States. It also changed a portion of Article I, Section 2 of the Constitution. This amendment ensures that no state can deprive any person of life, liberty, or property without due process of law.
The 15th Amendment, the last of the Reconstruction Amendments, was proposed in 1869 and ratified on February 3, 1870. It prohibits federal and state governments from denying citizens the right to vote based on "race, color, or previous condition of servitude." This amendment was passed in the wake of the narrow election of Ulysses S. Grant to the presidency in 1868, which convinced Republicans of the importance of protecting the franchise of black men.
While the Reconstruction Amendments were a significant step towards guaranteeing freedom and civil rights for all, their promise was eroded by state laws and federal court decisions in the late 19th century. It was not until the mid-20th century, with Supreme Court decisions like Brown v. Board of Education and civil rights legislation, that the full benefits of these amendments were realized.
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The right to vote
One of the earliest amendments to address voting rights was the Fifteenth Amendment, ratified in 1870, which prohibits the federal government or any state from denying or abridging a citizen's right to vote based on "race, color, or previous condition of servitude." This amendment was a significant milestone in the Reconstruction Era following the Civil War, granting African American men the right to vote. However, despite this progress, many African Americans still faced barriers to voting due to discriminatory practices such as literacy tests and poll taxes.
The Nineteenth Amendment, ratified in 1920, marked another pivotal moment in the expansion of voting rights by granting women the right to vote. This amendment ensured that women, who had long been excluded from the political process, could finally exercise their democratic rights and have their voices heard.
The Voting Rights Act of 1965 further strengthened protections for voters by prohibiting voter discrimination based on race, color, or membership in a language minority group. It also required certain jurisdictions with a history of voter discrimination to obtain federal approval before enacting new voting restrictions. This act was a significant tool in combating discriminatory practices that had persisted despite the Fifteenth Amendment.
The Twenty-fourth Amendment, ratified in 1964, eliminated poll taxes in federal elections, removing a significant financial barrier that had been used to disenfranchise African Americans and low-income individuals.
Finally, the Twenty-sixth Amendment, ratified in 1971, lowered the voting age from 21 to 18, empowering young people to participate in the democratic process and have their voices represented in elections.
Throughout American history, amendments have played a vital role in expanding and safeguarding the right to vote. While challenges and barriers to voting rights have persisted, these amendments have served as a foundation for continued progress and the protection of democratic ideals.
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The right to bear arms
The Second Amendment to the United States Constitution, which concerns the right to keep and bear arms, is among the most well-known and contentious American amendments. It states: "A well-regulated militia, composed of the body of the people, being the best security of a free State, the right of the people to keep and bear arms shall not be infringed; but no one religiously scrupulous of bearing arms shall be compelled to render military service in person."
The Second Amendment has been the subject of much debate and interpretation throughout American history. Early Americans had various reasons for bearing arms, including suppressing insurrection and allegedly, slave revolts. However, this claim is disputed and not supported by the historical record. The Pennsylvania Constitution of 1776, for instance, asserted the right of the people "to bear arms for the defence of themselves and the state." During the pre-revolutionary period of the 1760s, the colonial militia was composed of colonists, some of whom remained loyal to British rule.
The Second Amendment was debated and modified by the House in late August 1789. The discussions focused on the potential misuse of the "religiously scrupulous" clause by the government, similar to how British forces attempted to disband the Patriot militia at the start of the American Revolution. To address these concerns, the final clause was amended, resulting in the version sent to the Senate: "A well-regulated militia, composed of the body of the people, being the best security of a free state, the right of the people to keep and bear arms shall not be infringed; but no one religiously scrupulous of bearing arms shall be compelled to render military service in person."
The Second Amendment has been interpreted as a crucial safeguard against tyranny and the arbitrary use of power. Joseph Story, in his Commentaries on the Constitution, articulated the orthodox perspective, viewing the amendment as guaranteeing citizens' rights to keep and bear arms as a check against rulers' usurpations and arbitrary power. Story described a militia as the "natural defence of a free country," essential for protecting against foreign enemies, domestic uprisings, and ruler usurpation. However, Story also expressed concern about the American people's growing indifference toward maintaining a well-regulated militia, which could undermine the Second Amendment's protections.
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The right to freedom from cruel and unusual punishment
The United States Constitution has been amended 27 times, with the first 10 amendments being ratified simultaneously in 1791 and known as the Bill of Rights. Since then, there have been approximately 11,848 proposals to amend the Constitution, with members of the House and Senate proposing around 200 amendments during each two-year term of Congress.
One of the most significant amendments is the Eighth Amendment, which guarantees the right to freedom from cruel and unusual punishment. This amendment states that "excessive bail shall not be required, nor excessive fines imposed, nor cruel and unusual punishments inflicted." The concept of "cruel and unusual punishments" has been scrutinized, debated, and controversial. While the precise meaning of this phrase has been debated, it is generally understood to refer to punishments that are excessive and cruel, such as the use of torture devices like the rack, gibbets, and thumbscrews.
The Eighth Amendment addresses concerns raised during the drafting of the Constitution about the potential for Congress to reincorporate humiliating or torturous punishments for federal crimes. The amendment explicitly prohibits such punishments, ensuring that citizens are protected from excessive and cruel penalties.
The Supreme Court has provided further clarification on the interpretation and application of the Eighth Amendment. In Estelle v. Gamble (1976), the Court established that the amendment could be violated by factors related to a prisoner's confinement, such as deliberate indifference to a prisoner's serious illness or injury. Additionally, in Ingraham v. Wright (1977), the Court defined "cruel and unusual punishment" as the "unnecessary and wanton infliction of pain." This standard was refined in Whitley v. Albers (1986), where the Court acknowledged that certain actions may seem like an unconstitutional infliction of pain but could be justified if done in good faith to restore discipline rather than to cause harm.
The Eighth Amendment continues to be a subject of debate, particularly regarding its applicability to the death penalty. Opponents of capital punishment argue that it is a "cruel and unusual" punishment that is inconsistent with modern standards of civility and morality. The Eighth Amendment serves as a crucial safeguard against excessive and inhumane punishments, ensuring that the rights and dignity of citizens are protected.
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Frequently asked questions
There have been 27 amendments to the US Constitution.
For an amendment to become part of the Constitution, it must be ratified by three-fourths of the states (38 states since 1959). This can be done through either the legislatures of three-fourths of the states or state ratifying conventions in three-fourths of the states.
The first 10 amendments, collectively known as the Bill of Rights, were ratified on December 15, 1791. The 13th, 14th, and 15th amendments, known as the Reconstruction Amendments, address the abolition of slavery, equal protection, and the right of citizens to vote, respectively. The 21st Amendment, ratified in 1933, repealed the 18th Amendment and ended prohibition.

























