Slaughter-House Cases

The Slaughter-House Cases, 83 U.S. 36 (1873), is a landmark decision of the Supreme Court of the United States that ruled that the Privileges or Immunities Clause of the Fourteenth Amendment to the U.S. Constitution only protects the legal rights that are associated with federal U.S. citizenship, not those that pertain to state citizenship. Though the decision in the Slaughter-House Cases minimized the impact of the Privileges or Immunities Clause on state law, the Supreme Court would later incorporate the Bill of Rights through substantive due process.

Ostensibly seeking to improve sanitary conditions, the Louisiana legislature and the city of New Orleans had established a corporation charged with regulating the slaughterhouse industry. Members of the Butchers' Benevolent Association challenged the constitutionality of the corporation's monopoly, claiming that it violated the Fourteenth Amendment. The amendment had been ratified in the aftermath of the American Civil War with the primary intention of protecting civil rights of millions of newly emancipated freedmen in the Southern United States, but the butchers argued that the amendment protected their right to "sustain their lives through labor".

In the majority opinion written by Associate Justice Samuel Freeman Miller, the Court held to a narrower interpretation of the Fourteenth Amendment than the plaintiffs urged, ruling that it did not restrict the police powers exercised by Louisiana because the Privileges or Immunities Clause protected only those rights guaranteed by the United States, not individual states. In effect, the clause was interpreted to convey limited protection pertinent to a small minority of rights, such as the right to seek federal office.

In a dissenting opinion, Associate Justice Stephen J. Field wrote that Miller's opinion effectively rendered the Fourteenth Amendment a "vain and idle enactment".

Background

One writer described New Orleans in the mid-nineteenth century as plagued by "intestines and portions of putrefied animal matter lodged [around the drinking pipes]" whenever the tide from the Mississippi River was low; the offal came from the city's slaughterhouses. A mile and a half upstream from the city, 1,000 butchers gutted more than 300,000 animals per year.