The Slaughterhouse Betrayal: How One Supreme Court Ruling Gutted the 14th Amendment Before the Ink Was Dry

In 1873, five years after the 14th Amendment was ratified with the explicit purpose of securing the rights of newly freed Americans against hostile state governments, the Supreme Court of the United States effectively disemboweled one of its most powerful provisions. The case was The Slaughterhouse Cases, the provision was the Privileges or Immunities Clause, and the consequences of that single ruling have quietly distorted American constitutional law for more than 150 years. Legal scholars on the right — and increasingly a few on the left — are now asking a question that deserves a serious national answer: what if the Court simply got it wrong?

What the Clause Actually Says

The 14th Amendment's Privileges or Immunities Clause reads plainly: "No State shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States." To the Reconstruction Congress that drafted it, this language was a direct response to the Black Codes — the network of oppressive state laws Southern legislatures had enacted to re-subjugate freed slaves almost the moment the Civil War ended. The clause was designed to be a federal guarantee, a constitutional floor of fundamental rights that no state could lawfully breach.

The Reconstruction framers — men like Representative John Bingham of Ohio, the clause's principal author — understood "privileges or immunities" to encompass the fundamental rights enumerated in the Bill of Rights, as well as the natural rights recognized in antebellum legal tradition. This was not a narrow provision. It was a sweeping promise that American citizenship carried real, enforceable protections against state tyranny.

The Court's 1873 Demolition Job

The Slaughterhouse Cases arose from a dispute that had nothing to do with race. Louisiana had granted a monopoly to a single slaughterhouse corporation in New Orleans, effectively forcing hundreds of independent butchers out of business. Those butchers sued, arguing that the state had abridged their privileges or immunities as U.S. citizens — specifically, their right to pursue a lawful occupation.

The Supreme Court ruled against them 5-4. Writing for the majority, Justice Samuel Miller drew a distinction that most constitutional historians now regard as strained to the point of absurdity: he separated the "privileges or immunities of citizens of the United States" from the "privileges or immunities of citizens of the several states," arguing that the 14th Amendment only protected the former — a narrow category that excluded virtually all of the fundamental rights the Reconstruction framers had intended to secure. In one stroke, the Court transformed a broad constitutional guarantee into a near-nullity.

Justice Stephen Field, writing in dissent, understood exactly what the majority had done. He argued that the ruling reduced the Privileges or Immunities Clause to "a vain and idle enactment, which accomplished nothing." History has largely vindicated Field's dissent.

Why Originalists Say the Case Was Wrongly Decided

The originalist critique of Slaughterhouse is not fringe opinion. Scholars including Randy Barnett of Georgetown Law, Michael Kent Curtis, and the late Akhil Reed Amar — who approaches the Constitution from a very different political direction — have all argued, with substantial historical evidence, that Justice Miller's reading of the clause contradicted the clear intent of its authors.

The historical record from the 39th Congress, which drafted the 14th Amendment, is remarkably clear. Bingham and his colleagues repeatedly described the Privileges or Immunities Clause as incorporating the Bill of Rights against the states — something the original Constitution's first ten amendments did not do, since they constrained only the federal government. The clause was meant to change that. Slaughterhouse refused to let it.

It is worth noting that the Supreme Court eventually achieved incorporation of most Bill of Rights provisions against the states anyway — but it did so through the Due Process Clause, a provision whose text is far less naturally suited to the task. The result has been decades of doctrinal awkwardness that legal scholars across the ideological spectrum have struggled to justify coherently. The Court took the right destination by the wrong road, and constitutional law has been paying the price ever since.

What Reviving the Clause Could Mean Today

This is not merely an academic exercise. A revived Privileges or Immunities Clause, interpreted according to its original public meaning, could have significant practical consequences across multiple areas of constitutional dispute.

Gun rights: In McDonald v. City of Chicago (2010), the Supreme Court incorporated the Second Amendment against the states — but Justice Clarence Thomas, concurring, argued it should have done so through the Privileges or Immunities Clause rather than the Due Process Clause. Thomas's concurrence has become something of a roadmap for originalist attorneys. A Court willing to reconsider Slaughterhouse could place Second Amendment protections on a much firmer textual footing.

Economic liberty: The butchers of New Orleans had a legitimate grievance: the state had destroyed their livelihoods through naked cronyism. A robust Privileges or Immunities Clause could provide constitutional protection for the right to earn a living free from arbitrary state-granted monopolies — a protection that has been largely absent from American jurisprudence since 1873. In an era when occupational licensing cartels strangle competition in hundreds of industries, this matters.

Limits on state power: More broadly, a restored clause would reassert that American citizenship carries affirmative, enforceable rights that state governments cannot simply override. That is a fundamentally conservative proposition: the Constitution means what it says, and courts have an obligation to enforce it.

The Counter-Argument — and Why It Falls Short

Defenders of Slaughterhouse argue that overturning a 150-year-old precedent would create legal chaos and open the door to judicial overreach, with unelected judges substituting their policy preferences for democratic outcomes under the guise of protecting "privileges." This is a serious concern, and it deserves a direct answer.

The response is that Slaughterhouse itself was an act of judicial overreach — a 5-4 decision that substituted the majority's preference for a limited federal role over the clear constitutional text and documented legislative intent. Stare decisis is a valuable principle, but it has never been absolute, and the Court has overruled precedents of similar vintage when the historical and textual case for error was sufficiently compelling. Plessy v. Ferguson was once old precedent too.

The fear of judicial activism cuts both ways. A Court that refuses to enforce a constitutional provision because doing so might be inconvenient is not exercising restraint — it is abdicating its responsibility.

A Promise Still Waiting to Be Kept

The 14th Amendment was one of the most consequential additions to the American constitutional order. It was ratified in the aftermath of a war that cost 620,000 lives and was fought, at its core, over the question of whether human beings could be treated as property by state governments. The Privileges or Immunities Clause was the framers' answer to that question — a guarantee that no state could reduce any American citizen to a second-class subject stripped of fundamental rights.

The Supreme Court buried that guarantee in 1873, and American constitutional law has been working around the hole ever since. Justice Thomas has been quietly building the case for reconsideration from his seat on the Court for years. The legal scholarship supporting that reconsideration is substantial, serious, and growing.

For conservatives who believe that the Constitution should be read as it was written and that the promises made to American citizens deserve to be honored, the Slaughterhouse Cases represent unfinished business — and one of the most compelling originalist arguments for a course correction the Court has yet to make.

The Privileges or Immunities Clause was written to mean something; 150 years of judicial evasion does not change what it says.