A constitutional amendment is a change, correction, or revision to the US Constitution, which is the basis for federal law in the United States. An amendment adds additional laws included within the original American Constitution, which was ratified 1788. In the time since the constitution was ratified, here have been 27 constitutional amendments made. Amendments to the Constitution can either be suggested in Congress, or can originate from a two-thirds majority of the states demanding a constitutional convention. 

The first ten amendments to the Constitution, also known as the Bill of Rights, protect foundational civil liberties, like freedom of religion, speech, the press, and assembly. Other amendments to the Constitution signaled major civil rights landmarks in American history, including the 13th Amendment (which made slavery illegal), the 15th Amendment (which made voting discrimination on the basis of race illegal), and the 19th Amendment (which made voting discrimination on the basis of sex unconstitutional).
Article V of the Constitution addresses the process of how a constitutional amendment can be approved. The framers of the constitution understood that constitutional changes would be necessary, but wanted to ensure the process would include proper deliberation. Amendments can either be suggested by [Congress](https://www.masterclass.com/articles/legislative-branch-explained) or requested by two-thirds of the states.
One of the methods outlined in Article V for a constitutional amendment is for the process to start in Congress. All 27 amendments to the Constitution have been passed in the following way:

1. __An amendment is suggested by a Congress member__. Members of Congress—either from the House of Representatives or the Senate—may propose constitutional amendments. Both houses of Congress are required to pass the amendment by a two-thirds vote, or a supermajority, in order for it to continue in the ratification process. 
2. __The amendment is sent to the states__. Once approved by the Houses of Congress, the proposed amendment is sent to all 50 state governors for ratification, meaning approval. The governor can ratify the amendment by submitting it to the state legislature, or by convening a state ratifying convention.
3. __If three-quarters of the states ratify, the amendment passes__. If the amendment is approved by a simple majority vote in three-fourths of the states, it becomes part of the Constitution.
Though this process has never been successfully used, one of the methods outlined in Article V for a constitutional amendment is for the process to start with the states. 

1. __The states demand a constitutional convention__. If two-thirds of the state legislatures vote to hold a national constitutional convention to amend the Constitution, Congress is required to hold one. 
2. __Delegates attend the constitutional convention__. During a constitutional convention, or "Article V Convention," delegates from every state can attend the convention and propose new amendments. 
3. __Prospective amendments must be ratified by three-quarters of the state legislatures__. The amendments from the constitutional convention are sent to the states. If three-fourths of the state legislatures ratify the amendment, it becomes part of the Constitution.
In order to repeal an amendment, a new amendment must be approved through one of the two ratification processes. Only one constitutional amendment has ever been successfully repealed: The 18th Amendment banning the production and sale of alcohol, otherwise known as prohibition, was ratified in 1919. It was repealed by the 21st Amendment in 1933.
Get the [MasterClass Annual Membership](https://www.masterclass.com) for exclusive access to video lessons taught by the world’s best, including Doris Kearns Goodwin, Ron Finley, Jane Goodall, Neil deGrasse Tyson, and more.
Amendments to the Constitution of the United States must undergo a rigorous process of joint resolution and ratification, as outlined in Article V of the Constitution.

Amendments to the Constitution of the United States must undergo a rigorous process of joint resolution and ratification, as outlined in Article V of the Constitution.

Understanding the Constitutional Amendment Process in the US

A constitutional amendment is a change, correction, or revision to the US Constitution, which is the basis for federal law in the United States. An amendment adds additional laws included within the original American Constitution, which was ratified 1788. In the time since the constitution was ratified, here have been 27 constitutional amendments made. Amendments to the Constitution can either be suggested in Congress, or can originate from a two-thirds majority of the states demanding a constitutional convention. The first ten amendments to the Constitution, also known as the Bill of Rights, protect foundational civil liberties, like freedom of religion, speech, the press, and assembly. Other amendments to the Constitution signaled major civil rights landmarks in American history, including the 13th Amendment (which made slavery illegal), the 15th Amendment (which made voting discrimination on the basis of race illegal), and the 19th Amendment (which made voting discrimination on the basis of sex unconstitutional).

What Is a Constitutional Amendment?

Article V of the Constitution addresses the process of how a constitutional amendment can be approved. The framers of the constitution understood that constitutional changes would be necessary, but wanted to ensure the process would include proper deliberation. Amendments can either be suggested by <a href='https://www.masterclass.com/articles/legislative-branch-explained' target='_self' class='mc-text--link' data-mc-segment-trigger='true' data-mc-segment-event-type='Article Page Click' data-event-obj='{"textTag":"p","href":"https://www.masterclass.com/articles/legislative-branch-explained","linkCopy":"Congress","category":null}'>Congress</a> or requested by two-thirds of the states.

What Is Article V of the US Constitution?

One of the methods outlined in Article V for a constitutional amendment is for the process to start in Congress. All 27 amendments to the Constitution have been passed in the following way:<ol class="mc-m-4"><li class="mc-my-4"> 1. An amendment is suggested by a Congress member. Members of Congress—either from the House of Representatives or the Senate—may propose constitutional amendments. Both houses of Congress are required to pass the amendment by a two-thirds vote, or a supermajority, in order for it to continue in the ratification process. </li><li class="mc-my-4"> 2. The amendment is sent to the states. Once approved by the Houses of Congress, the proposed amendment is sent to all 50 state governors for ratification, meaning approval. The governor can ratify the amendment by submitting it to the state legislature, or by convening a state ratifying convention. </li><li class="mc-my-4"> 3. If three-quarters of the states ratify, the amendment passes. If the amendment is approved by a simple majority vote in three-fourths of the states, it becomes part of the Constitution. </li></ol>

How Congress Starts the Constitutional Amendment Process

Though this process has never been successfully used, one of the methods outlined in Article V for a constitutional amendment is for the process to start with the states. <ol class="mc-m-4"><li class="mc-my-4"> 1. The states demand a constitutional convention. If two-thirds of the state legislatures vote to hold a national constitutional convention to amend the Constitution, Congress is required to hold one. </li><li class="mc-my-4"> 2. Delegates attend the constitutional convention. During a constitutional convention, or &quot;Article V Convention,&quot; delegates from every state can attend the convention and propose new amendments. </li><li class="mc-my-4"> 3. Prospective amendments must be ratified by three-quarters of the state legislatures. The amendments from the constitutional convention are sent to the states. If three-fourths of the state legislatures ratify the amendment, it becomes part of the Constitution. </li></ol>

How the States Start the Constitutional Amendment Process

In order to repeal an amendment, a new amendment must be approved through one of the two ratification processes. Only one constitutional amendment has ever been successfully repealed: The 18th Amendment banning the production and sale of alcohol, otherwise known as prohibition, was ratified in 1919. It was repealed by the 21st Amendment in 1933.

Can Amendments Be Repealed?

Get the <a href='https://www.masterclass.com' target='_self' class='mc-text--link' data-mc-segment-trigger='true' data-mc-segment-event-type='Article Page Click' data-event-obj='{"textTag":"p","href":"https://www.masterclass.com","linkCopy":"MasterClass Annual Membership","category":null}'>MasterClass Annual Membership</a> for exclusive access to video lessons taught by the world’s best, including Doris Kearns Goodwin, Ron Finley, Jane Goodall, Neil deGrasse Tyson, and more.

Learn More

Amendments to the Constitution of the United States must undergo a rigorous process of joint resolution and ratification, as outlined in Article V of the Constitution.

Amendments to the Constitution of the United States must undergo a rigorous process of joint resolution and ratification, as outlined in Article V of the Constitution.
