The Clause in the 14th Amendment that the Supreme Court Gutted
After the Civil War, Congress faced a fundamental question: What did it actually mean to be a citizen of the United States?
The answer could not simply be emancipation. Former Confederate states quickly enacted Black Codes restricting where freedmen could live, work, travel, contract, testify, own property, and participate in civic life. Southern governments had lost the war, but many still sought to preserve racial hierarchy through state law.
The Fourteenth Amendment was written in response to that reality.
And at the center of Section 1 was a sweeping command:
“No State shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States.”
Today, the Privileges or Immunities Clause is one of the least discussed parts of the Constitution. But during Reconstruction, many members of Congress understood it as enormously important.
What Were “Privileges or Immunities”?
One of the most revealing discussions of the clause came not from a supporter of the Fourteenth Amendment, but from an opponent. Representative Andrew Rogers of New Jersey opposed the amendment. Yet even while criticizing it, he described “privileges or immunities” broadly enough to include rights like:
voting,
marriage,
contracting,
jury service,
and eligibility for public office.
That matters historically. Because it suggests that even critics of the amendment understood the language to carry substantial consequences for civil and political rights.
Supporters of Reconstruction were at least as expansive. Senator Charles Sumner viewed citizenship as requiring genuine civic equality, not merely formal freedom. John Bingham — one of the principal drafters of Section 1 — repeatedly argued that the amendment would protect fundamental rights against abusive state governments. Thaddeus Stevens framed Reconstruction as a constitutional restructuring meant to secure equality before the law after slavery.
There were disagreements over specifics. Reconstruction Republicans were not monolithic. But almost nobody appears to have described the Privileges or Immunities Clause as trivial. Which makes what happened next remarkable.
The Slaughter-House Cases
In 1873 — only five years after ratification of the Fourteenth Amendment — the Supreme Court dramatically narrowed the Privileges or Immunities Clause in the Slaughter-House Cases. The case itself involved a Louisiana law granting a monopoly to a single slaughterhouse company in New Orleans. But the constitutional consequences became far larger than the dispute over butchers.
The Supreme Court divided citizenship into two categories:
citizenship of the United States,
and citizenship of the states.
Then it interpreted the Privileges or Immunities Clause as protecting only a very narrow set of rights associated specifically with national citizenship.
Justice Samuel Miller’s opinion described these rights as things like:
access to federal courts,
protection on the high seas,
access to navigable waterways,
protection abroad,
petitioning Congress,
and rights connected to federal office and federal elections.
What the Court rejected was the broader idea that the Fourteenth Amendment protected substantive civil rights against abusive state governments. The distinction was transformative.
The Privileges or Immunities Clause had been written in the aftermath of slavery and Black Codes. Yet the Court interpreted it so narrowly that it became largely irrelevant to most ordinary civil-rights claims. The contrast between the Reconstruction debates and the Court’s interpretation is difficult to ignore. Even opponents of the amendment appeared to describe the clause more broadly than the Supreme Court ultimately interpreted it.
The Consequences of Narrowing Reconstruction
The Slaughter-House Cases did not merely decide one constitutional dispute. They reshaped the structure of American constitutional law. Because the Privileges or Immunities Clause was narrowed so aggressively, later courts developed constitutional rights doctrine elsewhere.
Rights involving:
marriage,
privacy,
bodily autonomy,
family relationships,
and other fundamental liberties
were later developed under substantive due process. Anti-discrimination doctrine developed primarily under equal protection.
In many ways, modern constitutional law grew around the absence of a robust Privileges or Immunities Clause. That is one reason constitutional scholars continue debating Slaughter-House nearly 150 years later. The case did not remove the clause from the Constitution. The text remains exactly where it has always been. But constitutional rights do not depend only on text. They also depend on interpretation.
Why This Still Matters
Modern constitutional debates about citizenship, equality, voting rights, bodily autonomy, and the role of the federal government all unfold within a constitutional framework shaped in part by Slaughter-House. And the case raises a deeper historical question:
What happens when constitutional language written in the aftermath of slavery and civil war is interpreted far more narrowly than many participants in the Reconstruction debates appeared to understand it?
That question still matters because constitutional provisions can remain formally intact while shrinking dramatically in practical meaning through interpretation. The Privileges or Immunities Clause still exists. But the version imagined during Reconstruction and the version recognized in Slaughter-House were not the same thing.
