Yick Wo v. Hopkins, 118 U.S. 356 (1886), is the Supreme Court decision that established two principles still central to constitutional law: a law that reads as neutral can still violate the Constitution if officials enforce it in a discriminatory way, and the Fourteenth Amendment’s promise of equal protection covers every person within U.S. borders, not just citizens.1Justia U.S. Supreme Court Center. Yick Wo v. Hopkins, 118 U.S. 356 (1886) The unanimous ruling struck down San Francisco’s selective enforcement of a laundry permit law against Chinese business owners and gave civil rights litigation one of its most enduring tools.
The Ordinance and How It Was Enforced
On May 26, 1880, San Francisco’s Board of Supervisors passed Order No. 1569. Operating a laundry in a wooden building required the Board’s consent, and running one without that consent was a misdemeanor, punishable by a ten-dollar fine or a day in jail for every dollar unpaid.1Justia U.S. Supreme Court Center. Yick Wo v. Hopkins, 118 U.S. 356 (1886) The stated purpose was fire safety. The Board had complete discretion over who received a permit, and the ordinance set no written standards for evaluating applications.2Oyez. Yick Wo v. Hopkins
About 320 laundries operated in the city, and roughly 310 sat in wooden buildings. Around 240 were Chinese-owned. When Lee Yick and roughly 200 other Chinese operators applied to keep working in the same buildings they had used for decades, every application was denied. Nearly every non-Chinese applicant was approved; the only recorded exception was a woman named Mrs. Mary Meagles.1Justia U.S. Supreme Court Center. Yick Wo v. Hopkins, 118 U.S. 356 (1886) Chinese operators were arrested and jailed for doing the same work, in the same kinds of buildings, that non-Chinese operators were allowed to continue.
Lee Yick was one of them. Jailed on August 22, 1885, for refusing to pay the ten-dollar fine, he filed a petition for habeas corpus. A second petitioner, Wo Lee, brought a parallel challenge through the federal courts, and the Supreme Court decided both cases together.3Law.Cornell.Edu. Yick Wo v. Hopkins, Sheriff, Etc.
What the Supreme Court Decided
Justice Stanley Matthews wrote for a unanimous Court. San Francisco’s authority to regulate laundries for fire safety was not in doubt. The question was whether officials could use that authority to punish one group while letting others carry on. The answer was no.
The Court held that even a law drafted in fair and impartial terms can be unconstitutional if administered with what the opinion called “an evil eye and an unequal hand,” making distinctions between people in similar circumstances that the law itself does not authorize.2Oyez. Yick Wo v. Hopkins The Board of Supervisors had been given permit power without any objective criteria and had exercised it based on race and nationality rather than fire safety.
The core problem was arbitrary administrative power. When an official can grant or withhold permission to earn a living based on personal preference, with no reference to the applicant’s competence or the suitability of the location, that is not regulation but the kind of unchecked authority the Constitution forbids.1Justia U.S. Supreme Court Center. Yick Wo v. Hopkins, 118 U.S. 356 (1886) The numbers made the discrimination self-evident. Not one Chinese applicant received a permit. Nearly every non-Chinese applicant did. That pattern, unexplained by any legitimate factor, was itself proof of a constitutional violation.
The Court declared both imprisonments illegal, reversed the judgments below, and ordered the petitioners discharged.3Law.Cornell.Edu. Yick Wo v. Hopkins, Sheriff, Etc.
Equal Protection Covers Non-Citizens
San Francisco argued that Lee Yick and Wo Lee, as subjects of the Emperor of China rather than U.S. citizens, were not protected by the Fourteenth Amendment. The Court rejected that argument. The Equal Protection Clause forbids any state from denying “to any person within its jurisdiction the equal protection of the laws.”4Congress.gov. Fourteenth Amendment The word is “person,” not “citizen.”
The opinion stated that the Amendment’s protections “extend to all persons within the territorial jurisdiction of the United States, without regard to differences of race, of color, or of nationality.”1Justia U.S. Supreme Court Center. Yick Wo v. Hopkins, 118 U.S. 356 (1886) Lee Yick and Wo Lee lived in San Francisco, obeyed its laws, and paid its taxes. That was enough. Citizenship status could not be used to strip away constitutional protection.
Why the Case Still Matters
Two doctrines from Yick Wo have been cited by courts ever since.
The first is that discriminatory enforcement of a neutral law is itself unconstitutional. A government does not have to write bias into a statute’s text to violate the Fourteenth Amendment. Applying the law unevenly based on race, nationality, or another impermissible factor is enough. This is the foundation of “as-applied” equal protection challenges, and it has shaped civil rights litigation for more than a century.
The second is that constitutional protections belong to people, not only to citizens. That distinction is invoked whenever non-citizens challenge government actions that treat them unequally, and Yick Wo remains one of the earliest and clearest Supreme Court statements that equal protection is a universal guarantee.
The case also stands for the evidentiary point that statistical patterns of enforcement can, on their own, prove discrimination. The Court did not need a written policy saying deny all Chinese applications. Zero permits to Chinese applicants and nearly all permits to everyone else, with no legitimate explanation, was enough.1Justia U.S. Supreme Court Center. Yick Wo v. Hopkins, 118 U.S. 356 (1886)
Who Lee Yick Was
The petitioner known as “Yick Wo” was Lee Yick, a Chinese national who came to San Francisco in 1861. “Yick Wo” was the name of his laundry at 349 Third Street, which he opened in 1863 and ran for twenty-two years. By 1884, both the Board of Fire Wardens and the Health Department had inspected the business and found it safe. He was not a new arrival cutting corners. He was a longtime operator with a clean safety record who was denied a permit, arrested, and jailed for continuing to do the same work his non-Chinese neighbors were permitted to continue without interruption.
The broader climate mattered. In 1882, Congress passed the Chinese Exclusion Act, imposing a ten-year ban on Chinese laborers entering the country.5National Archives. Chinese Exclusion Act (1882) San Francisco’s laundry ordinances fit that pattern at the local level, using regulatory authority to accomplish what an openly discriminatory law could not have survived. Yick Wo v. Hopkins was the Supreme Court’s answer to that tactic, and the answer has held up.