
The United States Constitution has been amended only 27 times since it was drafted in 1787, including the first ten amendments, known as the Bill of Rights. The process of amending the Constitution is outlined in Article V of the Constitution, which establishes two methods for proposing amendments. The first method requires a two-thirds majority vote in both the House of Representatives and the Senate, while the second method involves a constitutional convention called for by two-thirds of the state legislatures. Once an amendment is proposed, it must be ratified by three-fourths of the state legislatures or by three-fourths of state ratifying conventions, as determined by Congress. The amendment process is designed to be difficult, ensuring that only significant changes that affect all Americans or secure citizens' rights are made to the Constitution.
| Characteristics | Values |
|---|---|
| Authority to amend the Constitution | Article V of the Constitution |
| Amendment proposal | Two-thirds majority vote in both the House of Representatives and the Senate |
| Alternative proposal | Two-thirds of state legislatures call for a constitutional convention |
| Number of amendments to the Constitution | 27 |
| Difficulty of the amendment process | Very difficult and time-consuming |
| Number of proposals to amend the Constitution | At least 11,000 |
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What You'll Learn
- The US Constitution derives its authority to amend from Article V
- Amendments can be proposed by Congress with a two-thirds majority in both houses
- Alternatively, two-thirds of state legislatures can request a constitutional convention
- Amendments are then ratified by three-fourths of state legislatures or ratifying conventions
- The US Constitution has been amended 27 times since 1787

The US Constitution derives its authority to amend from Article V
Once an amendment is proposed, it must be ratified to become part of the Constitution. Congress determines the method of ratification. The first method of ratification requires the legislatures of three-quarters of the states (38 out of 50) to approve the amendment. The second method, which has only been used once in American history for the Twenty-First Amendment, involves ratifying conventions in three-quarters of the states.
The Archivist of the United States, who heads the National Archives and Records Administration (NARA), is responsible for administering the ratification process. The Archivist works with the Director of the Federal Register to follow procedures established by the Secretary of State and the Administrator of General Services. Once the required number of authenticated ratification documents is received, the Archivist certifies 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.
Article V also includes provisions that make certain subjects unamendable. For example, it states that no amendment shall deprive a state, without its consent, of its equal suffrage in the Senate. Additionally, legal scholars debate whether Article V is the exclusive means of amending the Constitution, with some arguing that other methods not outlined in Article V may be possible.
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Amendments can be proposed by Congress with a two-thirds majority in both houses
The authority to amend the US Constitution is derived from Article V of the Constitution. Amendments to the Constitution can be proposed in two ways. One of the ways is for Congress to propose an amendment with a two-thirds majority vote in both the House of Representatives and the Senate. This proposal is made in the form of a joint resolution. This method requires both the House and Senate to propose a constitutional amendment by a vote of two-thirds of the members present, assuming the presence of a quorum. This is the only method for proposing amendments that has been used thus far.
The other method is for Congress to call a constitutional convention upon the request or application of two-thirds of the state legislatures. This method has never been used. Once an amendment is proposed, it must be ratified by three-fourths of the states (38 out of 50 states) to become part of the Constitution. The legislatures of these states can ratify the amendment, or they can ratify it through ratification conventions, depending on the mode of ratification selected by Congress.
In recent history, the certification of amendments has become a ceremonial function attended by various dignitaries, including the President. The OFR also assembles an information package for the states, which includes formal "red-line" copies of the joint resolution, copies of the joint resolution in slip law format, and the statutory pro.
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Alternatively, two-thirds of state legislatures can request a constitutional convention
The United States Constitution has been amended only 27 times since it was drafted in 1787, making it a difficult and time-consuming process. The authority to amend the Constitution of the United States is derived from Article V of the Constitution, which establishes two methods for proposing amendments.
The first method requires a two-thirds majority vote in both the House of Representatives and the Senate. The second method, which has never been used, is for two-thirds of state legislatures (34 out of 50) to request a constitutional convention. This is known as an Article V Convention, state convention, or amendatory convention. This convention method for proposing amendments has sparked debate among scholars, with some arguing that it gives states a way to push Congress to propose an amendment on a specific issue.
Once the two-thirds threshold is reached, Congress must call a convention for proposing amendments. However, there is ongoing debate about whether Congress must automatically call a convention upon receiving the required number of state applications. The convention's rules, procedures, and voting thresholds are also subjects of discussion.
After an amendment is proposed through a convention, it must be ratified by three-fourths of the state legislatures (38 out of 50) to become law. This ratification process can occur through state legislatures or state ratifying conventions, with Congress determining the method.
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Amendments are then ratified by three-fourths of state legislatures or ratifying conventions
The process of amending the United States Constitution is derived from Article V of the Constitution. The process is intentionally challenging and time-consuming. After a proposed amendment is passed by two-thirds of both houses of Congress, it must be ratified by three-fourths of the state legislatures or ratifying conventions.
The first method of ratification requires three-fourths of the state legislatures to ratify an amendment. Alternatively, Congress may require that three-fourths of state ratifying conventions approve a proposed amendment. Congress has only specified this second mode of amendment once, for the Twenty-First Amendment, which repealed the Eighteenth Amendment establishing Prohibition.
The second method of ratification involves state conventions, which have the authority to propose amendments bypassing Congress. This method has never been used. Under Article V, two-thirds of the state legislatures can apply for Congress to call a convention to propose amendments. The convention can propose amendments, regardless of Congress's approval.
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. Once the Director of the Federal Register receives the required number of authenticated ratification documents, a formal proclamation is drafted for the Archivist to certify that the amendment is valid and has become part of the Constitution.
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The US Constitution has been amended 27 times since 1787
The US Constitution has been amended 27 times since it was first drafted in 1787. The authority to amend the Constitution is derived from Article V of the Constitution. The process of amending the Constitution is intentionally difficult and time-consuming. The first 10 amendments, known as the Bill of Rights, were ratified in 1791.
There are two methods for proposing amendments to the Constitution. The first method requires a two-thirds majority vote in both the House of Representatives and the Senate. The second method involves a constitutional convention called for by two-thirds of the state legislatures. To date, all 27 amendments have been proposed by Congress, with none proposed by constitutional convention.
Once an amendment is proposed by Congress, it must be ratified by three-fourths of the state legislatures or by three-fourths of state ratifying conventions, as specified by Congress. The amendment then becomes part of the Constitution.
The amendment process is challenging, and not all proposed amendments are successful. For example, the ERA Amendment did not pass the necessary majority of state legislatures in the 1980s. The content of proposed amendments must also be significant, impacting all Americans or securing the rights of citizens.
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Frequently asked questions
Yes, a two-thirds majority vote in both the House of Representatives and the Senate is required to propose an amendment.
The other method is to call a constitutional convention, which requires an application from two-thirds of the state legislatures.
The proposed amendment must be ratified by three-fourths of the state legislatures or three-fourths of state ratifying conventions, as determined by Congress.
No, none of the 27 amendments to the Constitution have been proposed by constitutional convention.
The Constitution was written "to endure for ages to come". By making it difficult to amend, the framers ensured that it would last.






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