The Constitution changes through amendment, not by court ruling or presidential order

The U.S. Constitution changes only through a formal amendment process written into Article V. A president cannot rewrite it. Congress cannot vote it away. The Supreme Court cannot overturn it — the Court interprets what it means, but that is different from changing the text itself. The amendment process is deliberately difficult: it requires either two-thirds of both the House and Senate, or a constitutional convention called by two-thirds of state legislatures. Then the proposed amendment must be ratified by three-fourths of the states (38 out of 50 today). This high bar exists by design — the framers wanted the Constitution to be stable, not to shift with every election cycle.

Since 1789, only 27 amendments have been ratified. The first ten (the Bill of Rights) came together in 1791. The most recent was the 27th Amendment in 1992, which limited congressional pay raises. That gap shows how hard it is to change the Constitution. Thousands of amendment proposals have been introduced in Congress over the centuries. Almost none make it past the first hurdle.

Key Takeaways

  • An amendment requires a two-thirds vote in both the House and Senate, then ratification by 38 of the 50 states — a process that typically takes years.
  • A constitutional convention, called by two-thirds of state legislatures, is an alternative route that has never been used successfully in American history.
  • The Supreme Court interprets the Constitution but cannot change its text; only the amendment process can do that.
  • Only 27 amendments have been ratified since 1789, and the most recent was in 1992, showing how rarely the Constitution actually changes.

The congressional amendment route: two-thirds vote, then state ratification

Most amendment proposals start in Congress. A member of the House or Senate introduces a joint resolution proposing a change to the Constitution. The proposal then goes to committee, where it is debated. If it survives committee, it goes to the full chamber for a vote. To move forward, it needs a two-thirds majority — not a straightforward 51-vote majority, but 290 votes in the House (if all 435 members are present) or 67 votes in the Senate (if all 100 are present). This threshold alone kills most proposals. Partisan disagreement is common, and reaching two-thirds agreement is rare.

If the proposal passes both chambers with the required two-thirds majority, it goes to the states. Each state legislature votes on whether to ratify it. The amendment becomes part of the Constitution only when 38 states have ratified it. A state can ratify, then later rescind its ratification (though the rules around rescission are disputed). The ratification process has no time limit — states can vote years or decades after Congress sends the proposal. The 22nd Amendment, which limited presidents to two terms, was proposed in 1947 and ratified in 1951. The 27th Amendment, about congressional pay, was proposed in 1789 but not ratified until 1992.

The constitutional convention route: two-thirds of states call it, delegates propose changes

Article V also allows states to call a constitutional convention without Congress. If two-thirds of state legislatures (34 states today) petition Congress to call a convention, Congress must do so. The convention would gather delegates — the rules for selecting them are not spelled out in the Constitution, so states would have to decide. These delegates would propose amendments, which would then go to the states for ratification under the same three-fourths rule as amendments from Congress.

This route has never succeeded. There have been calls for a convention on specific topics — a balanced budget amendment, term limits for Congress, or campaign finance reform — but never enough states have petitioned at the same time for the same purpose. The main obstacle is uncertainty: once a convention is called, it is unclear whether delegates would be bound to discuss only the stated topic or could propose broader changes. Some states fear a "runaway convention" that rewrites the entire document. This fear has kept the convention route unused despite multiple attempts.

Why the amendment process is so difficult

The framers built in this difficulty on purpose. They wanted the Constitution to be the stable foundation of government, not a document that changes with political winds. If amendments were straightforward, the Constitution would be rewritten constantly as power shifted between parties. The high bar — two-thirds of Congress and three-fourths of states — means an amendment must have broad, durable support across the country, not just a temporary majority.

The result is that the Constitution changes rarely, but when it does, the change usually reflects a genuine national consensus. The 13th Amendment, abolishing slavery, passed during the Civil War when Southern states had left the Union — it could not have passed with them present. The 19th Amendment, giving women the right to vote, took decades of organizing and came only when public opinion had shifted decisively. The 26th Amendment, lowering the voting age to 18, passed in 1971 after the Vietnam War made the issue urgent. Each of these amendments faced fierce opposition, but each eventually won support broad enough to clear the two-thirds and three-fourths thresholds.

What the Supreme Court does instead: interpret, not change

The Supreme Court does not change the Constitution, but it does interpret what the Constitution means. This distinction matters. When the Court rules on a case, it explains how it reads a particular clause or amendment. Over time, these interpretations can shift the practical meaning of the Constitution without changing the text itself.

For example, the First Amendment says Congress shall make no law abridging freedom of speech. The Court has interpreted this to mean that some speech — like burning a flag as protest — is protected, while other speech — like true threats or incitement to imminent violence — is not. The text has not changed since 1791, but the Court's interpretation of what counts as protected speech has evolved. Similarly, the Court has interpreted the Second Amendment's right to bear arms in different ways across different eras. These interpretations can be controversial, and a new Court majority can overturn a previous interpretation — as happened in 2022 when the Court expanded gun rights by overturning a 1970s precedent. But none of this changes the text of the Constitution itself.

Recent amendment proposals that did not pass

Many amendments have been proposed but failed to reach the two-thirds threshold in Congress, or passed Congress but failed to win ratification in enough states. The Balanced Budget Amendment has been proposed repeatedly since the 1970s. It passed the House in 1995 but fell one vote short in the Senate. The amendment would require the federal government to balance its budget each year (with exceptions for war or recession). It has strong support among some groups but faces opposition from others who argue it would force harmful spending cuts.

Term limits for Congress have also been proposed many times. Supporters argue that long-serving members become entrenched and unresponsive. Opponents argue that voters already have the power to limit terms by voting people out. The proposal has passed the House but never the Senate with the required two-thirds majority. A 1995 Supreme Court ruling also held that states cannot impose term limits on federal representatives — only a constitutional amendment could do so.

The flag desecration amendment, proposed after Supreme Court rulings protected flag burning as speech, passed the House multiple times but never the Senate. Campaign finance amendments have been proposed to overturn Supreme Court decisions on money in politics, but have not reached two-thirds support in Congress. These failed proposals show how high the bar is: even ideas with significant public support can stall if they lack the supermajority needed in Congress or the broad state support needed for ratification.

How long the amendment process actually takes

There is no set timeline. Some amendments have moved quickly. The 26th Amendment, lowering the voting age to 18, was proposed in March 1971 and ratified by July 1971 — just four months. Public pressure was high, and there was broad agreement that the age should match the military draft age. The 22nd Amendment took four years from proposal to ratification. The 27th Amendment took 202 years — it was proposed as part of the original Bill of Rights package in 1789 but was not ratified until 1992, when a college student's campaign revived interest in it.

Most amendments take several years. States must schedule legislative sessions, debate the proposal, and vote. Some states ratify quickly; others take months or years. Once 38 states have ratified, the amendment is done — remaining states do not need to vote. But if an amendment stalls before reaching 38 ratifications, it can sit indefinitely. The 22nd Amendment (presidential term limits) was ratified in 1951, but the 23rd Amendment (giving Washington, D.C. electoral votes) was not ratified until 1961. The gap reflects the time it took states to build consensus.

Frequently Asked Questions

Can a president change the Constitution?

No. A president can issue executive orders, which direct federal agencies how to carry out laws, but these cannot override the Constitution. If a president's order conflicts with the Constitution, the courts can strike it down. Only the amendment process can change the Constitution itself.

Can Congress change the Constitution without the states?

No. Congress can propose an amendment with a two-thirds vote in both chambers, but the amendment does not become part of the Constitution unless 38 states ratify it. Congress cannot unilaterally change the Constitution.

What happens if a state changes its mind after ratifying an amendment?

The rules are unclear. Some scholars argue that a state can rescind its ratification before the amendment is officially adopted (when 38 states have ratified). Once the amendment is adopted, most legal experts believe rescission is not possible. This question has never been definitively settled by the courts.

How many amendments are being proposed right now?

Dozens of amendment proposals are introduced in Congress each year. Most die in committee and never reach a floor vote. A few gain traction and are debated, but very few reach the two-thirds threshold needed to pass both chambers. You can search current proposals on Congress.gov.

Could the Constitution be completely rewritten?

Technically, yes, through a constitutional convention. If 34 states petitioned Congress to call a convention, Congress would have to do so. Delegates could propose a new constitution, which would then need ratification by 38 states. However, this has never happened, and many states fear a convention could spiral beyond its intended scope.