In United States v. Wong Kim Ark (1898), the Supreme Court held 6-2 that a child born on American soil is a citizen at birth under the Fourteenth Amendment, even when the parents are foreign nationals who cannot themselves naturalize. That ruling is the constitutional foundation of birthright citizenship in the United States, and it remains in force today, though its meaning is being tested again in a case the Court heard in April 2026.
Who Wong Kim Ark Was
Wong Kim Ark was born in San Francisco in 1873. His parents were Chinese nationals, lawful permanent residents running a business in the city. Under the Chinese Exclusion Act of 1882, they were barred from ever becoming American citizens.1National Archives. Chinese Exclusion Act
He traveled to China in 1894 and, when he tried to return in August 1895, the collector of customs refused to let him land, arguing he was not a citizen. He was detained on the steamship Coptic in San Francisco harbor. A writ of habeas corpus was filed on his behalf, and the district court ruled he was a citizen. The government appealed directly to the Supreme Court on an agreed set of facts: he had been born in San Francisco to permanent residents engaged in lawful trade who held no diplomatic post for the Emperor of China.2Justia U.S. Supreme Court Center. United States v. Wong Kim Ark
What the Court Decided
Justice Horace Gray, writing for a six-justice majority, ruled that Wong Kim Ark had been a citizen from the moment of his birth. The opinion rested on three interlocking points.
The Fourteenth Amendment adopted the common law rule of territorial birthright citizenship. Its opening sentence declares that “All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside.”3Congress.gov. U.S. Constitution – Fourteenth Amendment Because the Constitution does not separately define citizenship, the Court read that language against the English and American common law tradition, under which anyone born within a country’s territory and under its protection became a subject of that country regardless of the parents’ nationality. The Fourteenth Amendment, Gray wrote, “affirms the ancient and fundamental rule of citizenship by birth within the territory, in the allegiance and under the protection of the country, including all children here born of resident aliens.”4Legal Information Institute. United States v. Wong Kim Ark
The parents’ own status did not matter. A child born in the United States to parents who were permanent residents, carrying on lawful business, and not serving as diplomats, became a citizen at birth by force of the Fourteenth Amendment itself. That the parents were Chinese, and legally forbidden from naturalizing, changed nothing.
Congress could not undo that result by statute. The Chinese Exclusion Act, or any ordinary legislation, could not strip constitutional citizenship from a person born on U.S. soil. A right that flows from the Fourteenth Amendment sits above statutes and cannot be legislated away based on ancestry.
The Fight Over “Subject to the Jurisdiction Thereof”
Everything in the case turned on those five words. The government argued that “jurisdiction” meant complete political allegiance, and that children born to foreign nationals inherited their parents’ allegiance to a foreign sovereign at birth. On that reading, Wong Kim Ark had been born outside the amendment’s protection because his parents remained subjects of the Emperor of China.
The Court rejected that theory. “Subject to the jurisdiction” meant subject to the authority of American law: obeying the country’s laws and receiving its protection in return. Wong Kim Ark’s parents paid taxes, obeyed the law, and lived openly in San Francisco. Their son was born inside that legal relationship and was therefore a citizen.
The government leaned on Elk v. Wilkins (1884), in which the Court had denied citizenship to a Native American born on a reservation, reasoning that tribal members owed allegiance to their own nations rather than the United States.5Library of Congress. Elk v. Wilkins, 112 U.S. 94 The Wong Kim Ark majority treated that as a narrow exception tied to the distinct sovereignty of tribal nations, not a general theory of citizenship. Ordinary foreign residents were not tribal governments, and their children were not outside American jurisdiction.
The Dissent
Chief Justice Melville Fuller, joined by Justice John Marshall Harlan, dissented. They read “subject to the jurisdiction” as requiring eligibility for full political membership, not just physical presence. Because Chinese nationals were legally barred from naturalizing, Fuller argued, their American-born children inherited that disability and were not citizens.2Justia U.S. Supreme Court Center. United States v. Wong Kim Ark The dissent preferred citizenship by blood over citizenship by birthplace, and it accepted that Congress could deny citizenship to entire racial groups. That position lost, and its defeat is much of what gives the majority opinion its staying power: the ruling forecloses the use of ordinary politics to define a permanent hereditary underclass.
Who Is Not Covered
The majority recognized narrow exceptions inherited from the common law rule. A child born in the United States is not a citizen if the child is:
- Born to accredited foreign diplomats with full diplomatic immunity. This applies only to officers on the State Department’s “Blue List.” Consular staff and others with limited immunity are not covered, and their U.S.-born children are typically citizens.6eCFR. 8 CFR 1101.3 – Creation of Record of Lawful Permanent Resident Status for Person Born Under Diplomatic Status in the United States7U.S. Citizenship and Immigration Services. USCIS Policy Manual Volume 7 – Part O – Chapter 3
- Born on a foreign public vessel, which is treated as an extension of the foreign nation’s territory.
- Born in territory under hostile enemy occupation. The United States has not experienced such occupation since the War of 1812.
The Court also carried forward the tribal exception from Elk v. Wilkins. Congress closed that gap in 1924 with the Indian Citizenship Act, which declared all Native Americans born in the United States to be citizens without disturbing tribal property rights. After 1924, that exception had no practical effect.
Beyond these narrow categories, the rule is close to absolute. Children born to undocumented parents, to tourists, to workers on temporary visas, and to lawful permanent residents all become citizens at birth under the framework Wong Kim Ark established.
Where the Rule Reaches Geographically
The Fourteenth Amendment says “born in the United States,” and how far that phrase extends into U.S. territories has never been fully settled. Congress has granted birthright citizenship by statute to people born in Puerto Rico, Guam, the U.S. Virgin Islands, and the Northern Mariana Islands. Their citizenship is real, but it rests on legislation Congress could in principle revise, rather than on the Fourteenth Amendment directly.
American Samoa is the exception. People born there are classified as “non-citizen nationals” under 8 U.S.C. § 1401.8Office of the Law Revision Counsel. 8 USC 1401 – Nationals and Citizens of United States at Birth The State Department’s position is that the Citizenship Clause does not apply to American Samoa as an unincorporated territory.9U.S. Department of State. Acquisition by Birth in American Samoa and Swains Island American Samoans can live and work anywhere in the country, but they cannot vote in federal elections without going through naturalization. Legal challenges to that arrangement have so far failed.
Codified in Federal Statute
Congress wrote the same rule into the Immigration and Nationality Act. Under 8 U.S.C. § 1401(a), any person “born in the United States, and subject to the jurisdiction thereof” is a citizen at birth.8Office of the Law Revision Counsel. 8 USC 1401 – Nationals and Citizens of United States at Birth The statute tracks the constitutional language almost word for word, giving birthright citizenship two layers of protection: the Fourteenth Amendment and federal law.
Why the Case Is Back in the News
On January 20, 2025, President Trump signed Executive Order 14160, titled “Protecting the Meaning and Value of American Citizenship.” The order directed federal agencies to stop issuing passports, Social Security numbers, and other citizenship documents to children born in the United States after February 19, 2025, in two situations:10Federal Register. Executive Order 14160 – Protecting the Meaning and Value of American Citizenship
- Where the mother was unlawfully present at the time of birth and the father was not a citizen or lawful permanent resident.
- Where the mother was lawfully but temporarily present (on a tourist, student, or work visa, for example) and the father was not a citizen or lawful permanent resident.
Multiple federal courts blocked the order, finding it inconsistent with the Fourteenth Amendment and with 8 U.S.C. § 1401(a). The Supreme Court partially stayed those injunctions and took the case. Oral arguments in Trump v. Barbara were heard on April 1, 2026, and a decision is expected before the term ends.11Congress.gov. Trump v. Barbara – Supreme Court Considers Birthright Citizenship
The government’s argument in Trump v. Barbara is essentially the argument the government made in 1898: that “subject to the jurisdiction thereof” excludes children whose parents owe allegiance elsewhere. The Solicitor General has cited Elk v. Wilkins and the tribal-allegiance theory. That is the same reading Justice Gray’s majority rejected 128 years ago. Whether the current Court holds to Wong Kim Ark or narrows it will decide whether the framework that has governed American citizenship since 1898 stays intact.
What Happened to Wong Kim Ark
Wong Kim Ark won his case and continued to live in San Francisco. Each time he traveled abroad he was still required to produce sworn documentation proving he was the same person whose citizenship the Supreme Court had recognized. He eventually returned to China, where he died; the exact date is not well documented. His case has outlasted him by generations, and every American-born child whose citizenship is challenged today stands on the ground it laid.