The process of amending the United States Constitution is one of the most carefully designed features of American government. Article V of the Constitution establishes a deliberate, multi-step procedure that requires both proposal and ratification, ensuring that any changes to the nation's fundamental law reflect broad consensus across the country. This comprehensive guide explores every aspect of how an amendment becomes part of the Constitution, from initial proposal through final certification.

Understanding Article V: The Foundation of Constitutional Amendment

The authority to amend the Constitution of the United States is derived from Article V of the Constitution. This provision was carefully crafted by the Framers to strike a delicate balance between flexibility and stability. The process was designed to strike a balance between the excesses of constant change and inflexibility, ensuring that the Constitution could evolve with changing times while protecting it from hasty or ill-considered modifications.

The Framers recognized that the Constitution would need to adapt to circumstances they could not foresee, yet they also understood the dangers of making fundamental changes too easy. The result is a two-stage process requiring extraordinary majorities at both the federal and state levels, creating multiple checkpoints where proposed amendments must demonstrate widespread support.

Step One: Proposing an Amendment

Article V sets forth procedures for amending the Constitution, with most of the Article's text addressing the proposal and ratification of amendments. The proposal stage is the first critical hurdle any amendment must clear, and there are two distinct methods by which this can occur.

Method One: Congressional Proposal

The first method authorizes Congress, "whenever two-thirds of both houses shall deem it necessary," to propose constitutional amendments. This is by far the most common method used in American history. The first 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—and not a vote of two-thirds of the entire membership, present and absent.

When Congress proposes an amendment, it does so through a joint resolution. The Congress proposes an amendment in the form of a joint resolution, and since the President does not have a constitutional role in the amendment process, the joint resolution does not go to the White House for signature or approval. This is a significant departure from the normal legislative process, where presidential approval is required for bills to become law.

Once approved by Congress, the joint resolution proposing a constitutional amendment does not require presidential approval before it goes out to the states, as Article V provides no such requirement for constitutional amendments approved by Congress. In Hollingsworth v. Virginia (1798), the Supreme Court affirmed that it is not necessary to place constitutional amendments before the president for approval or veto.

Since the Founding, Congress has followed this procedure to propose thirty-three constitutional amendments, which were sent to the states for potential ratification. However, this represents only a tiny fraction of the amendments that have been suggested. Approximately 11,985 proposals to amend the Constitution have been introduced in Congress since 1789, demonstrating how difficult it is to achieve the two-thirds majority required in both chambers.

Method Two: Constitutional Convention

The second method requires Congress, "on the application of the legislatures of two-thirds of the several states" (34 as of 1959), to "call a convention for proposing amendments". This alternative pathway was included to give states a way to propose amendments even if Congress was unwilling to act.

Despite being written into the Constitution, none of the 27 amendments to the Constitution have been proposed by constitutional convention. This method of proposing amendments has never been used, though there have been several attempts throughout American history to trigger this process.

Three times in the 20th century, concerted efforts were undertaken by proponents of particular amendments to secure the number of applications necessary to summon an Article V Convention, including conventions to consider amendments to provide for the popular election of U.S. Senators. While these efforts came close, none successfully resulted in a convention being called.

Many questions remain about how an Article V convention would actually function. Scholars continue to debate issues surrounding these Article V conventions, including whether Congress must call a convention upon receiving the requisite number of state applications and whether the convention can be limited in scope. These unresolved questions have contributed to the reluctance to use this method.

Step Two: Ratification by the States

Once an amendment has been proposed through either method, it must then be ratified by the states. This is where the real test of an amendment's support occurs, as it must gain approval from a supermajority of states to become part of the Constitution.

The Three-Fourths Requirement

A proposed amendment becomes part of the Constitution as soon as it is ratified by three-fourths of the States (38 of 50 States). This high threshold ensures that amendments have truly widespread support across the nation, not just in one region or among one political faction.

The vote of each state (to either ratify or reject a proposed amendment) carries equal weight, regardless of a state's population or length of time in the Union. This means that Wyoming's ratification counts the same as California's, reflecting the federal nature of the Constitution and ensuring that smaller states have an equal voice in the amendment process.

Two Methods of State Ratification

Article V sets forth two methods for states to ratify amendments to the Constitution: by the Legislatures of three fourths of the several States, or by Conventions in three fourths thereof. Congress determines which method the states must follow in order for proposed amendments to become effective, with the choice of the mode of ratification lying in the sole discretion of Congress.

State Legislature Ratification

Legislatures of three-fourths of the states may ratify an amendment, and this is the most common method used. Under this approach, each state's elected legislature votes on whether to approve the proposed amendment. This method has been used for 26 of the 27 amendments that have been ratified.

State Convention Ratification

An amendment can also be ratified by conventions held in three-fourths of the states. This method has been used only once for the ratification of the 21st Amendment, which repealed Prohibition. The only amendment to be ratified through this method thus far is the Twenty-first Amendment in 1933.

The convention method was chosen for the 21st Amendment because Congress believed that state conventions would more accurately reflect public opinion on the repeal of Prohibition than state legislatures, which might be influenced by special interests or political considerations.

Step Three: Administrative Process and Certification

Once the required number of states have ratified an amendment, an administrative process follows to officially recognize the amendment as part of the Constitution.

The Archivist's Role

After Congress proposes an amendment, the Archivist of the United States, who heads the National Archives and Records Administration (NARA), is charged with responsibility for administering the ratification process under the provisions of 1 U.S.C. 106b. The archivist officially notifies the states, by a registered letter to each state's Governor, that an amendment has been proposed, and each Governor then formally submits the amendment to their state's legislature (or ratifying convention).

The original document is forwarded directly to NARA's Office of the Federal Register (OFR) for processing and publication, and the OFR adds legislative history notes to the joint resolution and publishes it in slip law format.

When Does an Amendment Take Effect?

An important constitutional principle is that an amendment becomes an operative part of the Constitution when it is ratified by the necessary number of states, rather than on the later date when its ratification is certified, and no further action by Congress or anyone is required.

However, there is still an official certification process. When the OFR verifies that it has received the required number of authenticated ratification documents, it drafts a formal proclamation for the Archivist to certify that the amendment is valid and has become part of the Constitution, and this certification is published in the Federal Register and U.S. Statutes at Large and serves as official notice to the Congress and to the Nation that the amendment process has been completed.

On three occasions, Congress has, after being informed that an amendment has reached the ratification threshold, adopted a resolution declaring the process successfully completed, though such actions, while perhaps important for political reasons, are, constitutionally speaking, unnecessary.

Historical Success Rate and Timeline

There have been 27 amendments to the Constitution, beginning with the Bill of Rights, the first 10 amendments, ratified December 15, 1791. Thirty-three amendments to the Constitution of the United States have been proposed by the United States Congress and sent to the states for ratification since the Constitution was put into operation on March 4, 1789, and twenty-seven of those, having been ratified by the requisite number of states, are now part of the Constitution.

This means that of the 33 amendments that cleared the high hurdle of congressional approval, six failed to achieve ratification by the states. When we consider that more than 11,000 amendments to the Constitution of the United States have been proposed, but only 27 have been ratified, the extraordinary difficulty of amending the Constitution becomes clear.

The Bill of Rights

On September 25, 1789, the First Congress of the United States proposed 12 amendments to the Constitution, and the 1789 Joint Resolution of Congress proposing the amendments is on display in the Rotunda in the National Archives Museum. Ten of the proposed 12 amendments were ratified by three-fourths of the state legislatures on December 15, 1791, and the ratified Articles constitute the first 10 amendments of the Constitution, or the U.S. Bill of Rights.

The Longest Ratification: The 27th Amendment

The 27th Amendment holds the record for the longest ratification period in American history. In 1992, 203 years after it was proposed, Article 2 was ratified as the 27th Amendment to the Constitution. This amendment, which deals with congressional pay raises, was originally proposed as part of the Bill of Rights but was not ratified by enough states at that time. It remained pending for over two centuries before finally achieving ratification.

The Fastest Ratification: The 26th Amendment

In response to Oregon v. Mitchell, Congress proposed the 26th Amendment, and in March 1971, the states ratified the amendment—less than four months after it was initially sent to the states for ratification, which was the shortest ratification process ever. This amendment, which lowered the voting age to 18, was ratified with remarkable speed due to widespread public support driven by the Vietnam War.

Special Considerations and Unresolved Questions

Time Limits for Ratification

Congress's authority to set a ratification deadline was affirmed in 1939 by the Supreme Court of the United States in Coleman v. Miller. Since the early 20th century, Congress has frequently included seven-year time limits in proposed amendments, though this practice is not required by the Constitution itself.

In the absence of a deadline, an amendment can be pending indefinitely, as are the four early amendments which are still technically 'pending,' and such measures could theoretically be returned to and eventually ratified long after (hundreds of years after) being proposed to the states.

Can States Rescind Ratification?

Article V says that an amendment that has been proposed to the states will become part of the Constitution if three-quarters of the states ratify it, but questions arise about what happens if a state ratifies quickly, but then, before many other states ratify, changes its mind and tries to rescind its ratification.

Some commentators would say no—once a state has ratified, that counts toward the required three-quarters, no matter what the state does later, but other commentators would say that a state can rescind its ratification so long as it does so before the amendment process has been completed, and thus there is no definite answer to this question.

In a few instances, States have sent official documents to NARA to record the rejection of an amendment or the rescission of a prior ratification, though the Archivist does not make any substantive determinations as to the validity of State ratification actions.

Notable Failed Amendments

Understanding the amendment process also means recognizing that many proposed amendments have failed to achieve ratification, even after clearing the congressional hurdle.

The Equal Rights Amendment

Introduced in Congress more times than any other proposed amendment, the Equal Rights Amendment (ERA) would have provided for legal gender equality if it had been ratified by the states before the congressionally imposed deadline in 1982. The ERA was approved by Congress in 1972 and quickly ratified by many states, but ultimately fell short of the 38 states needed for ratification before its deadline expired.

The Four Periods of Constitutional Amendment

All told, we have ratified 27 constitutional amendments across American history, and we can divide these amendments into four different periods of constitutional reform: The Founding era 1791-1804 gave us our first 12 amendments, including the Bill of Rights.

The second period was the Reconstruction Era following the Civil War, which produced the 13th, 14th, and 15th Amendments. The 13th, 14th, and 15th amendments deal with slavery, equal protection and certain constitutional rights; collectively, these are known as the Reconstruction Amendments.

The third period was the Progressive Era. Between 1870 (and the ratification of the 15th Amendment, banning racial discrimination in voting) and 1913, the American people didn't amend the Constitution a single time, but between 1913 and 1920, the American people amended the Constitution four times.

The fourth period spans the mid-20th century to the present, including amendments related to voting rights, presidential succession, and congressional pay. It's been over three decades since our last constitutional amendment, with the 27th Amendment ratified in 1992 being the most recent addition to the Constitution.

Why the Process Is So Difficult

The Framers deliberately made the amendment process challenging for several important reasons. The process does require amendments to be supported by a consensus, and there are powerful reasons for requiring such support, such as preventing constitutional provisions that are strongly opposed by a substantial minority of the country from being enacted, which would undermine the nation's allegiance toward the Constitution.

It takes a long time and a high degree of societal consensus to get a ratified constitutional amendment. This high bar ensures that only changes with truly broad and lasting support become part of the fundamental law of the land.

The supermajority requirements at both the proposal and ratification stages mean that amendments cannot be passed by simple majorities or during temporary shifts in public opinion. Instead, they require sustained support across different regions, political parties, and demographic groups.

The Role of State Legislatures

The state ratification process ensures that amendments reflect a broad consensus, and state participation is crucial in the constitutional amendment process. The requirement that three-fourths of states must approve an amendment gives states a powerful check on federal power and ensures that constitutional changes have support not just in Washington, D.C., but across the diverse landscape of American states.

This federal structure of the amendment process reflects the dual sovereignty that characterizes American government. While the national government proposes most amendments, the states ultimately decide whether those proposals become part of the Constitution. This division of authority ensures that neither the federal government nor the states can unilaterally alter the fundamental law.

Practical Steps in the Modern Amendment Process

In contemporary practice, the amendment process typically follows these steps:

  • A member of Congress introduces a joint resolution proposing an amendment
  • The resolution is referred to the appropriate committee in the House or Senate
  • If the committee approves, the resolution goes to the full chamber for debate and voting
  • The resolution must pass both the House and Senate with a two-thirds majority of members present
  • The approved joint resolution is sent to the National Archives
  • The Archivist notifies all 50 state governors of the proposed amendment
  • Each governor submits the amendment to their state legislature (or calls for a ratifying convention)
  • State legislatures debate and vote on ratification
  • As states ratify, they send official notification to the National Archives
  • When the 38th state ratifies, the amendment becomes part of the Constitution
  • The Archivist issues a formal certification and publishes notice in the Federal Register

Constitutional Limits on Amendments

Two sentences at the end of Article V make certain subjects unamendable, providing that no State, without its Consent, shall be deprived of its equal Suffrage in the Senate. This means that the equal representation of states in the Senate—with each state having two senators regardless of population—cannot be changed without the consent of every state that would be affected.

This provision reflects the fundamental compromise between large and small states that made the Constitution possible in the first place. It ensures that small states will always have a guaranteed voice in the Senate, protecting the federal nature of the American system.

The Amendment Process in Comparative Perspective

The United States Constitution is one of the most difficult constitutions in the world to amend. Many other democracies allow constitutional changes through simple legislative majorities or national referendums. The American system's requirement for supermajorities at both the federal and state levels creates multiple veto points where proposed amendments can fail.

This difficulty has both advantages and disadvantages. On one hand, it protects the Constitution from hasty changes driven by temporary political passions. On the other hand, it can make the Constitution slow to adapt to changing circumstances and social values. The balance between stability and flexibility remains a subject of ongoing debate among constitutional scholars and citizens alike.

Resources for Learning More

For those interested in exploring the constitutional amendment process further, several authoritative resources are available online:

Conclusion: A Living Constitution Through Formal Amendment

The constitutional amendment process established in Article V represents one of the most important features of American government. It provides a formal mechanism for constitutional change while ensuring that such changes reflect broad and lasting consensus. The process requires extraordinary majorities at multiple levels of government, making amendments difficult but not impossible to achieve.

The 27 amendments that have been ratified demonstrate that the process can work when there is sufficient support for change. From the Bill of Rights to the most recent amendment on congressional pay, each successful amendment has required years of advocacy, debate, and political coalition-building. The thousands of failed proposals remind us that the bar for constitutional change is intentionally high.

Understanding how amendments become part of the Constitution is essential for informed citizenship. It reveals the careful balance the Framers struck between stability and change, between federal and state authority, and between majority rule and minority rights. As Americans continue to debate potential constitutional changes, the Article V process remains the formal pathway through which the people can alter their fundamental law.

Whether through congressional proposal or a convention of states, whether ratified by legislatures or conventions, the amendment process ensures that changes to the Constitution must have widespread, sustained support across the diverse American landscape. This high threshold protects the Constitution's status as fundamental law while allowing it to evolve with the nation it governs.