How Article V Amendments Work

Method 1: Two-thirds of both houses of Congress

This is the path every ratified amendment has taken so far.

• Threshold: A two-thirds vote in the House of Representatives and a two-thirds vote in the Senate.
• What it means: Not a simple majority, not a narrow partisan win, but a level of agreement that usually requires cross-party support and a strong public consensus.
• What comes next: Congress sends the proposed amendment to the states and specifies the method of ratification.

Because of the two-thirds requirement, Congress tends to propose amendments only when the issue has already matured into something close to national inevitability. That is why many of the most famous amendments arrived after a major shock to the system: Reconstruction, the Progressive Era, and the civil rights movements of the twentieth century. Others followed moments of intense political reform, including changes tied to elections and presidential power.

Method 2: A convention called by two-thirds of state legislatures

This is the option people cite when they say, “Let the states bypass Congress.” It is real. It is in Article V. It has never been used to propose an amendment.

• Threshold to trigger it: Two-thirds of state legislatures apply to Congress for a convention. With 50 states, that means 34 states.
• Congress’s duty: If the threshold is met, Congress “shall” call a convention.
• The open questions: Article V does not spell out how delegates are chosen, how voting works, whether the convention can be limited to a single topic, or what rules govern procedure.

Those unanswered questions are not a technicality. They are a major reason a convention has stayed theoretical, alongside the political risk and strategic uncertainty that come with opening the Constitution on purpose. A convention is attractive as a pressure valve when Congress is unresponsive, but it also raises hard questions because no one can point to a definitive constitutional instruction manual for keeping it within bounds.

There is also a practical fight over the counting. States have submitted many applications over time, and scholars and advocates disagree about which ones “count,” whether older applications expire, and whether applications must match by topic to be added together.

Historically, the closest the nation has come to an Article V convention is the repeated use of convention threats to push Congress into acting. The best example is the Seventeenth Amendment, which created the direct election of U.S. senators. Over decades, states pressed for reform and the convention idea gained momentum. Congress ultimately proposed the amendment itself in 1912, in part to avoid the uncertainty of a convention.

Method A: Ratification by state legislatures

This is the standard method and the one used for most amendments.

• Who votes: Each state’s legislature.
• How it works: The amendment is treated like a special constitutional action, not an ordinary bill. Governors do not have a formal veto role in this process.
• Why it matters: It ties constitutional change to the regular institutions of state government, where political majorities can shift slowly and where local interests are intensely represented.

Method B: Ratification by state conventions

This method is rare, and it exists for a reason: it lets the country go around potentially reluctant legislatures and ask the public to weigh in through specially elected delegates.

• Who votes: Delegates elected to a ratifying convention in each state.
• When it has been used: Most famously for the Twenty-First Amendment, which repealed Prohibition. Congress used conventions in 1933 because many state legislatures were still influenced by temperance politics, while public opinion had shifted decisively against the Eighteenth Amendment.

Deadlines

Article V does not require a deadline, but Congress often includes one in the proposing resolution. Many modern amendments came with a seven-year time limit, though there are notable exceptions, including the Twenty-Seventh Amendment, which had no deadline and was ratified more than two centuries after it was proposed.

Deadlines change the political dynamics by forcing the question: can a national consensus form fast enough, or will momentum dissipate?

Deadlines also raise legal and political edge cases. Can Congress extend a deadline, or remove it after the fact? What happens when a state tries to rescind a prior ratification? Article V does not answer these questions directly, and the country has repeatedly argued about them in real time.

1) The supermajorities are intentionally steep

Two-thirds of both houses of Congress is difficult in a polarized era. Then, three-fourths of the states is even harder because it forces an amendment to appeal across regions, cultures, and political systems.

Even a proposal with overwhelming national polling support can fail if it threatens a set of states large enough to block 38.

2) Federalism is a built-in veto

Small states have the same vote as large states in the Senate. And every state counts equally in the ratification tally. That structure makes amendments resistant to simple “national majority” pressure.

In other words, Article V does not ask, “Does most of the country want this right now?” It asks, “Is the country willing to write this into permanent constitutional law?”

3) Many proposals aim at problems the Constitution does not need to solve

Americans often reach for constitutional amendments to resolve ordinary policy fights: balancing the budget, setting term limits, banning a particular form of speech, regulating crime, or defining social policy in permanent terms.

But the Constitution is not meant to be a national statute book. The more specific an amendment is, the more likely it is to trigger unintended consequences, and the more likely it is to face resistance from states that do not want to constitutionalize a moving target.

4) Other institutions absorb pressure

Sometimes the demand for an amendment fades because courts reinterpret existing text, Congress passes legislation, or political norms shift.

That flexibility can reduce the appetite for formal amendments, even when the underlying conflict remains. It also helps explain why some of the most dramatic legal changes in American life have happened through statutes and court decisions, not Article V.

The Equal Rights Amendment (ERA)

The ERA, first introduced in the 1920s and passed by Congress in 1972, declared that equality of rights could not be denied on account of sex. It fell short of the three-fourths threshold by the deadline, after a major national debate over gender equality, family law, and the role of courts.

The story did not end there. Decades later, three additional states ratified it: Nevada (2017), Illinois (2018), and Virginia (2020). That revived a central Article V dispute: whether a deadline in the proposing resolution can be removed or disregarded after it has passed, and what legal effect late ratifications have. The ERA remains one of the most discussed amendment efforts in modern history precisely because it sits at the intersection of constitutional symbolism, practical legal effects, and procedural uncertainty.

The Child Labor Amendment

Proposed in 1924, the Child Labor Amendment would have given Congress clearer power to regulate child labor nationwide. It never reached the necessary number of state ratifications.

Its history is a reminder that amendments often compete with changing realities. Federal labor regulation expanded significantly through legislation and New Deal era constitutional interpretation, reducing the perceived need to finish the Article V job.

The Titles of Nobility Amendment

In 1810, Congress proposed an amendment that would have punished U.S. citizens who accepted a title of nobility or honor, or certain gifts or payments, from a foreign power. It did receive some state ratifications, but it never became part of the Constitution.

You will sometimes hear it described as “still pending” because Congress did not set a deadline. That claim is debated, in part because historians dispute aspects of the ratification record and because it has not been treated as a live amendment in modern constitutional practice. The safe takeaway is simpler: it was proposed, partially ratified, and then faded from real political life.

The Corwin Amendment

In 1861, as the nation fractured, Congress proposed the Corwin Amendment, which would have tried to protect slavery by blocking future constitutional amendments that would let the federal government interfere with a state’s “domestic institutions.” A few states ratified it, but the Civil War and the Thirteenth Amendment soon made the entire idea obsolete.

This is the dark mirror of Article V: the process can be used to entrench injustice as well as to correct it. The difference is whether the country can form the necessary consensus.

D.C. voting rights amendments

In 1978, Congress proposed the District of Columbia Voting Rights Amendment, which would have treated D.C. like a state for purposes of representation in Congress and the Electoral College. It did not attract enough state ratifications before its deadline.

The failure highlights another Article V reality: amendments that redistribute political power face especially steep odds because the states that lose influence have every incentive to block them.