The core dates to remember are June 13, 1866 for congressional approval and July 9, 1868 for the Secretary of State's certification that the required number of states had ratified. The sections that follow walk through the congressional step, the state ratification process, certification, and where to read the primary documents.
Quick answer: when was the 14th Amendment ratified?
Short factual answer, 14th amendment ratified
The Fourteenth Amendment was certified as part of the United States Constitution on July 9, 1868, after enough states had ratified the proposed text to meet the constitutional requirement, following congressional approval in 1866.
This certification is recorded in federal archival summaries and reference pages that preserve the sequence of congressional action and state ratifications; these sources provide the documentary basis for the adoption date National Archives page on the Fourteenth Amendment.
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The primary federal pages cited below are the quickest places to verify the dates and the original texts for the Fourteenth Amendment.
What this article will cover
Below you will find a brief timeline, an explanation of the congressional step in 1866, how state ratifications work, why the July 9, 1868 certification matters, and where to read the amendment text and ratification instruments.
The article also outlines common confusions to avoid and offers practical tips for researchers checking state-by-state records. For a simple overview see 14th Amendment: simple what it is.
What the Fourteenth Amendment is and why its ratification matters
Section 1: citizenship and protections
Section 1 of the amendment defines national citizenship and contains language that has formed the basis for Due Process and Equal Protection claims in U.S. law, making the amendment a central source of constitutional authority Legal Information Institute summary of Amendment XIV. See our explainer on the amendment explain the Fourteenth Amendment.
Because the amendment became part of the Constitution once certified, its provisions are treated as binding constitutional text in courts and historical accounts, and summary descriptions by established references are useful starting points for legal context Encyclopaedia Britannica entry on the Fourteenth Amendment.
Why the ratification date is legally significant
The formal date of adoption matters for legal timelines and historical narratives because it marks when the amendment’s text could be cited as constitutional authority in official contexts; legal references and historical compilations therefore note the certification date when constructing chronologies Congress.gov page on Amendment XIV.
Scholars and practitioners typically distinguish between the date Congress proposed the amendment and the later certification date when a sufficient number of states had ratified it, because those dates serve different research uses.
How Congress approved the proposed amendment (June 13, 1866)
Congressional approval and transmission to the states
Congress approved the proposed Fourteenth Amendment on June 13, 1866, and transmitted the text to state legislatures for ratification, following the constitutional amendment process for proposals by Congress Library of Congress primary documents page. The Library of Congress also provides an introduction and research guide to the amendment Library of Congress guide on the 14th Amendment.
When Congress approves an amendment it does not itself make the change to the Constitution; instead it sends the proposed text to the states where each state follows its own procedures to consider and vote on ratification.
The Fourteenth Amendment was certified as part of the Constitution on July 9, 1868, after Congress approved the proposed text on June 13, 1866 and the required number of states ratified it.
What ‘sent to the states’ means in the amendment process
Sending the amendment to the states is an administrative and constitutional step that begins the period in which state legislatures, or state conventions if specified, consider the proposal under their internal rules and vote on ratification.
Each state’s action is recorded in its legislative journals or in a ratification instrument, and federal repositories compile these actions to establish when the threshold for adoption has been met.
Overview of the state ratification process and timeline
How many states were needed
Ratifications occurred state by state, and reaching the necessary number of approvals triggered the administrative certification recorded in constitutional histories.
Sequence versus single decisive ratification
Because ratification is a sequential process, historians often trace a list of state-by-state dates to show how the required number was reached; federal compilations provide chronological lists that culminate in the July 1868 certification Library of Congress primary documents page.
For many readers the important point is that the certification date reflects when the required number of states had ratified, not necessarily the date any single state acted.
Formal certification: why July 9, 1868 is the key date
Role of the Secretary of State in certification
After the required number of state ratifications was reached, the Secretary of State issued the formal certification that the Fourteenth Amendment had been adopted, and federal records record July 9, 1868 as the date of that certification National Archives page on the Fourteenth Amendment. The National Archives milestone documents page also describes the amendment as a pacing document in Reconstruction-era records National Archives milestone document on the 14th Amendment.
Certification is an administrative act that documents the completion of the ratification process and informs public records, archival pages, and legal references that the amendment is part of the Constitution as of the certified date.
What certification means for constitutional adoption
Certification does not create the substance of the amendment; it records that the constitutional procedure was completed and that the amendment’s text should be treated as adopted from that date forward.
Researchers use the certification date when creating legal timelines and when citing the amendment as constitutional authority.
Where to read the amendment text and primary documents
Federal repositories and digital collections
These repositories often provide the amendment text, transcriptions, and links to scanned documents when available, making them reliable starting points for verification and citation. See the Library of Congress digital collections guide for more navigation tips Library of Congress digital collections: 14th Amendment.
What to look for in ratification instruments
When examining state ratification records, look for an official certificate or a journal entry showing the date of action, the formal language of ratification, and repository metadata that identifies where the document is archived.
Federal compilations usually list the state date, the form of the approving instrument, and a reference to the repository where the certificate or transcription is held Library of Congress primary documents page.
Legal significance: citizenship, due process, and equal protection
Section 1 and its long-term legal role
Because these legal doctrines evolved through case law, summaries in reputable sources provide a high-level account without presenting disputed doctrinal details as settled outcomes Encyclopaedia Britannica entry on the Fourteenth Amendment.
A short checklist to search digital repositories for amendment text and ratification records
Use repository search filters when available
How legal references summarize its effects
Legal resources such as the Cornell Law School compilation and historical overviews summarize the amendment’s main effects while noting that specific legal doctrines developed over subsequent court decisions.
Using these references helps frame scholarly and civic writing about the amendment’s legal role without substituting for case law research.
State-by-state ratification: where to find chronological lists
Compiled federal summaries
National Archives and Library of Congress pages provide compiled chronological lists of state ratifications that show the order in which states approved the amendment and the dates used to determine when adoption occurred National Archives page on the Fourteenth Amendment.
These compilations are convenient for readers who want a chronological list without consulting each state archive individually.
State archival records and certificates
State archives often hold the original ratification certificates or transcribed legislative entries; where available, scanned images of certificates provide the clearest evidence of the date and form of a state’s action Library of Congress primary documents page.
Because some items are digitized at different times, researchers should check repository update notes in case new scans have been posted.
Common misunderstandings about the ratification date
Difference between congressional approval and certification
One common confusion is treating the congressional approval date, June 13, 1866, as the ratification date; that date marks congressional approval and transmission, not the formal adoption of the amendment Library of Congress primary documents page.
The formal adoption date most often cited for constitutional purposes is the certification date, July 9, 1868, which records that enough states had ratified.
Why some summaries list multiple dates
Different summaries may list the congressional proposal date, various state ratification dates, and the certification date to serve different scholarly or legal purposes, so readers should note which date a source is using and why.
When precise dating matters, consult the primary federal records or the specific state certification documents to confirm which date is being referenced National Archives page on the Fourteenth Amendment.
Typical research pitfalls when checking ratification records
Relying on secondary summaries without primary verification
Avoid accepting derivative summaries without checking the primary-source materials they cite, because transcription differences and citation errors can lead to incorrect date reporting; always follow the citation trail back to the repository listing Avalon Project page for Amendment XIV.
Primary images of certificates are the best evidence when available, and repository metadata can show when a document was digitized or transcribed.
Misreading state records or clerk transcriptions
State legislative records may record the outcome in language that varies by jurisdiction, and clerk transcriptions may omit formal certificate headings; researchers should compare the transcription with scanned originals when possible Library of Congress primary documents page.
Checking multiple trusted repositories reduces the risk of relying on a single transcription that may contain errors.
Practical examples: how the ratification date is used in scholarship and reference
Citing the amendment in historical narratives
Historians may cite the congressional approval date when discussing legislative history, but when stating when the amendment became part of the Constitution they generally cite the certification date, July 9, 1868, as recorded in federal summaries National Archives page on the Fourteenth Amendment.
The difference in practice reflects the distinct research questions authors address, whether legislative intent or the point of constitutional adoption.
Using certification dates in legal timelines
Legal timelines typically cite the certification date because it denotes when courts and officials could rely on the amendment’s text as part of the Constitution for legal argument and adjudication Congress.gov page on Amendment XIV.
When compiling a legal chronology, note the source used for the certification date and include repository metadata where relevant.
How to cite the amendment and ratification documents in your work
Best practices for citing digital archives
Include the document title, repository name, stable URL, and the date you accessed the material when citing online versions of the amendment or ratification instruments; many repositories provide suggested citation formats to follow Library of Congress primary documents page.
When available, cite scanned images of certificates and provide the specific file or item identifier used by the archive.
Noting certificate dates and repository metadata
Record the exact certificate date printed on a ratification instrument and note the archival series or collection where the item is held, since those details help others verify the same document.
Repositories such as the Avalon Project and the National Archives include item-level descriptions that are useful for precise citation Avalon Project page for Amendment XIV.
Short researcher checklist and timeline summary
One-sentence timeline
One-sentence timeline: Congress approved the proposed text on June 13, 1866, and the amendment was certified as adopted on July 9, 1868 National Archives page on the Fourteenth Amendment.
Checklist to verify the adoption date
Checklist: consult National Archives, Library of Congress, and Avalon Project pages; find the Secretary of State certification; locate state ratification certificates where possible.
Note the repository and exact item identifiers for transparency when you report the date.
Conclusion and further reading
Where to go next
For further reading consult the National Archives, Library of Congress, Congress.gov, Avalon Project, Cornell Law School’s Legal Information Institute, and Encyclopaedia Britannica for text, context, and legal summaries Congress.gov page on Amendment XIV. You can also visit our constitutional rights hub for related content.
Archived primary sources to consult
Primary documents and scanned ratification instruments are the definitive sources for state-by-state dates and the Secretary of State certification; use the repositories listed above to verify and cite the adoption date in your work.
The amendment is recorded as certified on July 9, 1868, after enough states had ratified the proposed text.
Congress approved the proposed text on June 13, 1866 and sent it to the states for their ratification procedures, but certification came later when the required number of states had ratified.
Consult federal repositories such as the National Archives, the Library of Congress, and the Avalon Project for texts and scanned instruments when available.
References
- https://www.archives.gov/education/lessons/14th-amendment
- https://www.law.cornell.edu/constitution/amendmentxiv
- https://www.britannica.com/topic/Fourteenth-Amendment-to-the-United-States-Constitution
- https://www.congress.gov/constitution-amendment/amendment-xiv
- https://www.loc.gov/rr/program/bib/ourdocs/14thamendment.html
- https://avalon.law.yale.edu/19th_century/amend14.asp
- https://michaelcarbonara.com/contact/
- https://guides.loc.gov/14th-amendment
- https://guides.loc.gov/14th-amendment/digital-collections
- https://www.archives.gov/milestone-documents/14th-amendment
- https://michaelcarbonara.com/explain-the-fourteenth-amendment-what-it-does
- https://michaelcarbonara.com/14th-amendment-simple-what-it-is
- https://michaelcarbonara.com/issue/constitutional-rights/
