
The United States Constitution has been amended 27 times since it was drafted in 1787, and amending it is a difficult and time-consuming process. Article V of the Constitution outlines the procedures for amending it, and there are two methods for proposing amendments. Firstly, Congress proposes an amendment with a two-thirds majority vote in both the House of Representatives and the Senate. Secondly, a constitutional convention can be called for by two-thirds of the State legislatures. However, this has never happened. Once an amendment is proposed, it must be ratified by three-quarters of the States to become part of the Constitution. The process of amending the Constitution is designed to be challenging, ensuring that only significant changes affecting all Americans or securing citizens' rights are made.
| Characteristics | Values |
|---|---|
| Difficulty of amending | The framers of the Constitution intended for it to endure for ages, so they made it difficult to amend. |
| Number of amendments | The Constitution has been amended 27 times since 1787. |
| Amendment proposals | Amendment proposals must be of major impact affecting all Americans or securing the rights of citizens. |
| Amendment initiation | Amendments may be proposed by Congress with a two-thirds majority vote in both the House of Representatives and the Senate, or by a constitutional convention called for by two-thirds of state legislatures. |
| Amendment ratification | Amendments must be ratified by three-fourths of state legislatures or conventions. |
| Amendment certification | The certification document is signed by the Archivist of the United States and includes a list of the states that ratified the amendment. |
| State constitutions | State constitutions are amended more frequently than the federal constitution and may be easier to amend. |
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What You'll Learn

The amendment process
Amending the United States Constitution is a challenging and time-consuming process. The framers of the Constitution intended for it to be a difficult task, as Chief Justice John Marshall wrote in the early 1800s that the Constitution was written "to endure for ages to come." The Constitution has been amended only 27 times since it was drafted in 1787, including the first 10 amendments, known as the Bill of Rights, which were adopted four years later.
The authority to amend the Constitution of the United States is derived from Article V of the Constitution. The amendment process can be initiated by either of two methods:
- Congressional Proposal: The first method requires both the House and the Senate to propose a constitutional amendment with a two-thirds majority vote in both chambers. This is the only method that has been used thus far. The Congress proposes an amendment in the form of a joint resolution, which is then forwarded directly to the National Archives and Records Administration's (NARA) Office of the Federal Register (OFR) for processing and publication.
- Constitutional Convention: The second method involves a constitutional convention called for by two-thirds of the State legislatures. However, none of the 27 amendments to the Constitution have been proposed through this method.
Once an amendment is proposed, it must be ratified. Ratification can occur through one of two methods:
- State Legislature Ratification: The proposed amendment is ratified by the legislatures of three-fourths of the States (38 out of 50 States).
- Convention Ratification: The proposed amendment is ratified by conventions in three-fourths of the States.
When a State ratifies a proposed amendment, it sends the Archivist of the United States an original or certified copy of the State action. The OFR examines the ratification documents for facial legal sufficiency and an authenticating signature. If the documents are in order, the Director of the Federal Register acknowledges receipt and maintains custody of them until an amendment is adopted or fails. Once the required number of authenticated ratification documents is received, the OFR drafts a formal proclamation for the Archivist to certify that the amendment is valid and has become part of the Constitution. This certification is published in the Federal Register and U.S. Statutes at Large, serving as official notice that the amendment process is complete.
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Article V procedures
Amending the US Constitution is a challenging and lengthy process. The Constitution has been amended 27 times since it was drafted in 1787, including the first ten amendments, which were adopted four years later as the Bill of Rights. The framers made it difficult to amend the Constitution to ensure its longevity.
Article V of the Constitution outlines the procedures for amending it. It establishes two methods for proposing amendments. Firstly, the Congress, whenever two-thirds of both Houses deem it necessary, shall propose amendments to the Constitution. The second method is that on the application of the legislatures of two-thirds of the States, Congress shall call a convention for proposing amendments. In both cases, the amendments become valid and part of the Constitution when ratified by the legislatures of three-fourths of the States, or by conventions in three-fourths of the States, as proposed by Congress.
The first method requires both the House and the Senate to propose a constitutional amendment by a vote of two-thirds of the Members present. This is the only method that has been used so far to propose amendments. The second method, calling a Constitutional Convention, has never been used.
The Archivist of the United States, who heads the National Archives and Records Administration (NARA), is responsible for administering the ratification process. The Archivist has delegated many of the duties associated with this function to the Director of the Federal Register. When a State ratifies a proposed amendment, it sends the Archivist an original or certified copy of the State action. The Director of the Federal Register examines the ratification documents for facial legal sufficiency and an authenticating signature. If the documents are in order, the Director acknowledges receipt and maintains custody of them. Once an amendment is adopted, the Director transfers the records to the National Archives for preservation.
A proposed amendment becomes part of the Constitution as soon as it is ratified by three-fourths of the States (38 out of 50 States). The Director of the Federal Register then drafts a formal proclamation for the Archivist to certify that the amendment is valid and has become part of the Constitution.
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Congress's role
Amending the United States Constitution is a challenging and time-consuming process. It has only been amended 27 times since it was drafted in 1787, including the first 10 amendments, which were adopted four years later as the Bill of Rights. The framers made it difficult to amend the Constitution to ensure its longevity.
Congress plays a crucial role in the process of amending the Constitution, as outlined in Article V of the Constitution. Congress can propose amendments in two ways:
- Congress proposes an amendment: Whenever two-thirds of both Houses (the House of Representatives and the Senate) deem it necessary, Congress shall propose amendments to the Constitution. This is done through a joint resolution, which is forwarded directly to the National Archives and Records Administration's (NARA) Office of the Federal Register (OFR) for processing and publication. The OFR then adds legislative history notes to the joint resolution and publishes it.
- Congress calls a Constitutional Convention: If two-thirds of the state legislatures apply, Congress shall call a convention for proposing amendments. However, this method has never been used in the history of the United States.
Once an amendment is proposed, either by Congress or through a Constitutional Convention, it must be ratified. Ratification can occur in two ways, as specified by Congress:
- Ratification by State Legislatures: The proposed amendment is sent to the state legislatures, and it becomes part of the Constitution once it is ratified by three-fourths of the states (38 out of 50 states).
- Ratification by Conventions: The states call for conventions, and the proposed amendment is ratified by conventions in three-fourths of the states.
After a proposed amendment is ratified, the Archivist of the United States, who heads NARA, is responsible for administering the ratification process. The Archivist works with the Director of the Federal Register to examine ratification documents and ensure their legal sufficiency and authenticity. Once the required number of authenticated ratification documents is received, the OFR drafts a formal proclamation for the Archivist to certify that the amendment is valid and has become part of the Constitution. This certification is published in the Federal Register and U.S. Statutes at Large, serving as official notice to Congress and the nation that the amendment process is complete.
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State ratification
Amending the US Constitution is a challenging and time-consuming process. The Constitution has been amended only 27 times since it was drafted in 1787, including the first 10 amendments, which were adopted four years later as the Bill of Rights. The framers made it difficult to amend the Constitution to ensure its longevity.
The authority to amend the Constitution comes from Article V of the Constitution. Congress proposes an amendment with a two-thirds majority vote in both the House of Representatives and the Senate, or a constitutional convention is called for by two-thirds of the state legislatures. The President does not have a constitutional role in the amendment process.
Once Congress proposes an amendment, the Archivist of the United States, who heads the National Archives and Records Administration (NARA), is responsible for administering the ratification process. The Archivist has delegated many duties to the Director of the Federal Register, who examines ratification documents for facial legal sufficiency and an authenticating signature.
When a state ratifies a proposed amendment, it sends the Archivist an original or certified copy of the state action, which is conveyed to the Director of the Federal Register. The Director acknowledges receipt and maintains custody of the documents until an amendment is adopted or fails, at which point they are transferred to the National Archives for preservation.
A proposed amendment becomes part of the Constitution when ratified by three-fourths of the states (38 out of 50). The Director of the Federal Register then drafts a formal proclamation for the Archivist to certify that the amendment is valid and has become part of the Constitution. This certification is published in the Federal Register and U.S. Statutes at Large, serving as official notice that the amendment process is complete.
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Original intent
The original intent of the Founding Fathers in drafting the United States Constitution was to create a document that would "endure for ages to come". To achieve this, they made the process of amending the Constitution a difficult task. As a result, the Constitution has been amended only 27 times since it was drafted in 1787, including the first 10 amendments, known as the Bill of Rights, which were adopted four years later.
The authority to amend the Constitution is derived from Article V, which outlines two methods for proposing amendments. The first method, which has been used for all amendments so far, involves Congress proposing an amendment with a two-thirds majority vote in both the House of Representatives and the Senate. The second method, which has never been used, allows two-thirds of the state legislatures to call for a constitutional convention to propose amendments.
In both cases, for an amendment to become part of the Constitution, it must be ratified by three-fourths of the states, either through their legislatures or state ratifying conventions. This ensures that any amendment has a broad consensus and represents the will of the people in multiple states, rather than just a simple majority.
The amendment process has been criticised for being too strict and time-consuming, making it difficult to enact amendments. However, the original intent was to ensure that any changes to the Constitution are carefully considered and have a significant impact on the nation as a whole, rather than being driven by temporary political fixes.
While the amendment process is the formal mechanism for changing the Constitution, it is important to note that the interpretation and application of the Constitution by the courts, Congress, and the President also play a significant role in shaping its meaning and impact on a daily basis. This ongoing interpretation and implementation of the Constitution may be considered a form of "living document" originalism, where the original intent is adapted to the changing needs and circumstances of the nation.
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Frequently asked questions
It means that a change has been made to the Constitution. This could be a change to the document itself or how it is interpreted and applied in practice.
An amendment becomes part of the Constitution when it is ratified by three-quarters of the states (38 out of 50).
Amendments can be proposed by Congress with a two-thirds majority vote in both the House of Representatives and the Senate, or by a constitutional convention called for by two-thirds of state legislatures.
The Archivist of the United States is responsible for administering the ratification process. They receive the original or certified copy of the state action when a state ratifies a proposed amendment.
The Constitution has been amended 27 times since it was drafted in 1787. The first 10 amendments were adopted four years later as the Bill of Rights.






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