What are the procedures for the amendment of the Constitution? A clear explainer

Explain the constitutional amendment process: Overview

The Constitution sets a high bar for change. To explain the constitutional amendment process is to start with Article V, which establishes two ways to propose amendments and two ways to ratify them.

Under Article V, Congress may propose an amendment when two-thirds of both the House and the Senate approve, or two-thirds of state legislatures may call for a convention to propose amendments. Once proposed, three-fourths of the states must approve the amendment either through their legislatures or through state conventions, depending on which mode Congress specifies when it transmits the proposal to the states. For a concise official overview of these steps, see the National Archives guidance on amendment procedures National Archives guidance on amendments.

Practically speaking, every amendment that has been added to the Constitution so far began as a proposal from Congress, and the states completed ratification. An Article V convention called by state legislatures has never actually produced a successful amendment in U.S. history, which is an important historical fact to keep in mind when following modern proposals.

Text of Article V and what it legally authorizes

Article V is brief and procedural. In plain language, it says there are two methods to propose amendments and two methods to ratify them, and it assigns Congress the role of transmitting proposals to states and choosing which ratification mode applies. For the exact phrasing and a reliable annotated explanation, consult the Article V text and the Constitution Annotated at the Library of Congress Constitution Annotated on Article V and the Constitution Center Article V – Constitution Center.

The text of Article V does not answer every practical question. It does not set deadlines for ratification, it does not describe how delegates to a state-called convention would be selected, and it does not lay out detailed rules for resolving disputes about state ratification or rescission. Legal and scholarly guides note these omissions and treat several procedural details as open questions.

Methods to propose an amendment: Congress or a convention

Congressional proposal: mechanics and precedent

The most familiar route is congressional proposal. If two-thirds of the House and two-thirds of the Senate approve the same amendment language, Congress transmits that proposal to the states for ratification. Historically, every ratified amendment to the Constitution followed that path; none originated from a convention called under Article V. The historical record and listings of approved amendments are collected by the National Archives and underscore the congressional-proposal precedent National Archives listing of amendments.

Convention called by states: theory and unanswered procedural questions

The other proposal route is a convention called when two-thirds of state legislatures apply for one. The Constitution provides the trigger but not detailed rules for how a convention would operate, which leaves major procedural questions unanswered. Scholars and official analyses have flagged issues like delegate selection, voting rules, and scope control as unresolved, meaning a state-called convention is legally possible but procedurally uncertain. For an overview of these unresolved questions, see the Congressional Research Service discussion of the amendment process CRS report on the amendment process and scholarly discussions such as the Columbia Law Review analysis The puzzles and possibilities of Article V.

Because the convention route has not been used to adopt any amendment so far, its practical mechanics remain largely hypothetical. That uncertainty affects how states, Congress, and courts might prepare for or respond to calls for a convention.

How Congress proposes amendments in practice

When Congress takes the congressional route, the process typically begins like other major measures: a member drafts a joint resolution proposing specific amendment language and refers it to committee. Committees review the language and may hold hearings or mark up the resolution before it reaches the chamber floor for votes.

To become a formal proposal, the same amendment text must pass both the House and the Senate with a two-thirds vote in each chamber. After both chambers approve, the resolution is transmitted to the states. Historical listings show that every amendment ratified into the Constitution followed this congressional path, which remains the operative precedent for many lawmakers and observers National Archives guidance on amendments.

Congress has some discretion about how it frames and transmits proposals. In modern practice it has sometimes attached time limits for state ratification, though those limits are not specified in Article V itself and have prompted legal discussion when used.

Unsettled questions about an Article V convention

Calls for a convention raise immediate procedural questions. Key uncertainties include how delegates would be selected at the state level, how rules of order would be set and enforced, and whether a convention could exceed its initial mandate. Analysts treat these as unsettled questions rather than settled law.

Authoritative commentators and government researchers have outlined these questions without offering a single, settled answer. The Congressional Research Service and educational centers summarize the practical and legal ambiguities that would shape any real convention effort CRS report on key procedural issues.

Because courts have not had to resolve a full Article V convention scenario, the legal consequences of disputed rules or out-of-scope actions remain speculative and a subject of active scholarly debate.

Transmission to the states and final certification

After an amendment proposal clears the necessary federal approval steps, the House Clerk or the Senate Secretary formally transmits the approved text to each state for ratification. The receiving office and the National Archives track the transmission and subsequent state actions.

States then consider the proposed amendment under the mode of ratification Congress specified. State legislatures or state conventions act according to their own procedures and keep official records in legislative journals or convention minutes. The National Archives monitors state ratification returns and, after the required number of states ratify, the Archivist of the United States issues certification that the amendment has been duly ratified and is part of the Constitution National Archives guidance on certification.

How states ratify: legislatures versus state conventions

State legislatures and state conventions are the two routes states use to ratify a proposed amendment. When Congress transmits a proposal, it specifies which method states should use, and that choice affects how each state proceeds.

Legislative ratification follows normal lawmaking or resolution procedures within a state legislature. State conventions require a different process, often involving separate elections or special delegate bodies established under state law, which can change timing and dynamics. For a compact overview of how legislatures handle ratification, see the National Conference of State Legislatures guide Brief Amending the US Constitution.

Congress has used state conventions in specific historical cases where it decided that direct public conventions were preferable. That choice is rare but notable, and the Constitution Annotated provides documented examples and explanations for when Congress has set the convention route for ratification Constitution Annotated on ratification modes.

Congress’s role after proposal: choosing ratification mode and other powers

Congress decides when it sends a proposed amendment whether ratification should occur by state legislatures or by state conventions. That selection is part of Congresss authority in the transmission step and shapes how states organize their votes.

In addition, Congress has in modern practice sometimes included ratification deadlines in the text of a proposal or in accompanying resolutions. Because Article V itself does not state time limits, the use and legal status of such deadlines have been the subject of legal analysis and debate. For a review of these practices and their legal implications, see the Constitution Annotated and CRS commentary Constitution Annotated on Article V.

Timing, deadlines, rescissions and legal disputes

Timing is an area of recurring legal questions. Article V contains no express deadline for ratification, but Congresss decision to add a time limit to certain proposals has created disputes about whether those limits are binding and how they affect the counting of state ratifications.

States have at times attempted to rescind earlier ratification approvals, and courts have not fully settled how to treat such rescissions when a proposal has not yet reached the three-fourths threshold. Legal scholars and government reports treat contested ratifications and rescission claims as unsettled questions that would likely require judicial resolution if they became decisive CRS analysis on timing and disputes.

Historical examples that illustrate the process

History offers several useful case studies. The 19th Amendment, granting women the right to vote, and the 26th Amendment, lowering the voting age, are examples where Congress proposed amendments and state legislatures completed ratification in relatively short periods.

By contrast, the 27th Amendment, dealing with congressional pay changes, followed a much longer timeline from proposal to final ratification, showing that timing can vary widely depending on political and procedural circumstances. These documented examples are summarized in archival listings and in the Constitution Annotated, which provide the official dates and records for each case National Archives historical listings.

Typical errors and common misunderstandings

Readers often assume that a state-called convention has been used before, but no amendment adopted to date originated from such a convention. That common belief conflicts with the historical record and is worth correcting with primary sources.

Another frequent mistake is assuming Article V includes clear timing rules. The text does not, and the use of deadlines has been a congressional practice rather than a constitutional specification. Similarly, the legal status of rescission attempts and contested ratifications is not definitively settled and should be described as an open legal issue supported by CRS and scholarly commentary CRS discussion of unsettled ratification issues.

Practical checklist: following or preparing an amendment effort

If you want to track a proposed amendment, start with the congressional record or the Constitution Annotated for the proposal text and status. The text of the proposal and any congressional resolutions will show whether Congress specified a ratification mode or a deadline.

After an amendment proposal clears the necessary federal approval steps, the House Clerk or the Senate Secretary formally transmits the approved text to each state for ratification. The receiving office and the National Archives track the transmission and subsequent state actions.

Next, monitor official state websites or state legislative journals for recorded ratification votes or convention results. The National Archives publishes certification notices and maintains records of state ratifications, which you can use to verify counts and timing National Archives ratification records.

Keep a simple log of dates and official documents: the joint resolution number, the transmission date from the Clerk or Secretary, each state’s recorded action with citation to the legislative journal or convention minutes, and the Archivists certification when it occurs.

Where to find authoritative sources and follow updates

The most reliable sources are primary and official. The National Archives publishes procedural guidance and certification notices. The Library of Congress Constitution Annotated explains legal context and historical practice. The Congressional Research Service provides readable briefings on open legal questions and practical issues. You can also consult our guide on reading the Constitution how to read the US Constitution.

These resources together offer the texts, procedural guidance, historical listings, and legal analysis you need to verify a proposal’s status and how states are acting on it. Rely on those primary documents for legal or factual verification rather than secondary summaries Constitution Annotated and Library of Congress resources.

Conclusion: what readers should remember about the amendment process

Article V creates two routes to propose amendments and two routes to ratify them, and in practice all ratified amendments to date began as congressional proposals. That basic framework should guide how readers assess any active amendment effort.

At the same time, important procedural uncertainties remain about state-called conventions, timing rules, rescissions, and how courts might resolve contested outcomes. For step-by-step verification, use the National Archives and the Constitution Annotated as your primary references.