United States v. Wong Kim Ark is the 1898 Supreme Court decision that established birthright citizenship as a constitutional guarantee in American law. By a 6-2 vote, the Court held that a child born on U.S. soil to parents of Chinese descent who were lawfully residing in the country became a citizen at the moment of birth under the Fourteenth Amendment, regardless of the parents’ nationality or their statutory ineligibility to naturalize. The ruling has framed every debate about who counts as an American ever since, and it is again before the Supreme Court in 2026.
How the Case Arose
Wong Kim Ark was born in 1873 at 751 Sacramento Street in San Francisco. His parents were Chinese subjects who had built a permanent home in California and ran a business there. They held no diplomatic post.1Justia U.S. Supreme Court Center. United States v. Wong Kim Ark His parents eventually returned to China, but he stayed and grew up in San Francisco.
In 1894, he made a temporary visit to China. When he returned aboard the steamship Coptic in August 1895, the Collector of Customs at the port of San Francisco refused to let him land, taking the position that he was not a citizen because his parents had been Chinese subjects.2National Archives. Departure Statement of Wong Kim Ark, 1894 Held on the ship, he petitioned for habeas corpus in the U.S. District Court for the Northern District of California on October 2, 1895.3Legal Information Institute. United States v. Wong Kim Ark The district court ordered him released, ruling he was a citizen. The federal government appealed directly to the Supreme Court.
The Constitutional Question
Everything turned on the opening sentence of the Fourteenth Amendment: “All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens.”4Constitution Annotated. Fourteenth Amendment Two conditions had to be met, birth on American soil and being subject to the country’s jurisdiction. Nobody disputed the first. The fight was about the second.
A broad reading treated “subject to the jurisdiction” as meaning anyone physically present and bound by American law. A narrow reading, urged by the government, treated it as requiring complete political allegiance, which would exclude children whose parents still owed loyalty to a foreign sovereign. The justices had to pick between the two.
The Government’s Argument
The government leaned on the Chinese Exclusion Act of 1882, the first major federal law to bar immigration based on national origin. It suspended entry of Chinese laborers for ten years and, critically, prohibited Chinese residents from ever becoming naturalized citizens.5National Archives. AAPI Exclusion and the Case of Wong Kim Ark Since Wong Kim Ark’s parents could never naturalize, government attorneys argued, they remained subjects of a foreign power and passed that status to their son at birth.
The government also relied on Elk v. Wilkins, an 1884 decision that denied citizenship to a Native American man who had left his tribe. In that case, the Court had read “subject to the jurisdiction” to require being “completely subject to their political jurisdiction and owing them direct and immediate allegiance.”6Justia U.S. Supreme Court Center. Elk v. Wilkins The government wanted the same standard applied to the children of Chinese immigrants. The underlying theory was that citizenship passed through bloodlines rather than through geography, and that federal exclusion statutes could create a permanent class of American-born residents who would remain aliens for life.
What the Court Held
Justice Horace Gray, writing for a six-justice majority, rejected the government’s position and ruled that Wong Kim Ark had been a citizen from the moment of his birth.1Justia U.S. Supreme Court Center. United States v. Wong Kim Ark The majority grounded its analysis in the English common law principle of jus soli, the “right of the soil,” under which the place of birth determines citizenship. Gray traced the principle through centuries of English law, into the American colonies, and forward through independence.
“Subject to the jurisdiction thereof,” the Court held, meant being subject to American law and within the reach of American courts. It did not require political allegiance in a deeper sense, and it did not require the parents to have renounced ties to a foreign government. Because Wong Kim Ark’s parents were permanent residents engaged in private business, they owed obedience to U.S. law while living here, and their son was born fully within that jurisdiction.
The Court also drew an important line about the limits of legislation. A congressional statute cannot override a constitutional guarantee. The Chinese Exclusion Act could restrict immigration and bar naturalization, but it could not strip citizenship from someone who acquired it at birth under the Fourteenth Amendment. Birthright citizenship, once vested, is not something Congress can legislate away.
The majority distinguished Elk v. Wilkins on the ground that Native American tribes held a unique semi-sovereign relationship with the federal government that had no parallel among the children of ordinary foreign residents.
The Dissent
Chief Justice Melville Fuller, joined by Justice John Marshall Harlan, dissented. Justice Joseph McKenna did not participate, having joined the Court after argument. Fuller read “subject to the jurisdiction thereof” as synonymous with “not subject to any foreign power,” language he drew from the Civil Rights Act of 1866, passed by the same Congress that proposed the Fourteenth Amendment.1Justia U.S. Supreme Court Center. United States v. Wong Kim Ark
Fuller called the majority’s reliance on English common law misplaced. He described jus soli as a feudal doctrine tying a person to the sovereign of the land where they were born, and argued the American Revolution had rejected that model in favor of jus sanguinis, under which citizenship passes through parents. He warned the majority’s rule would create “double allegiance” to two countries. The dissent lost, but its logic has been the foundation of nearly every effort to narrow birthright citizenship in the 128 years since.
The Narrow Exceptions
The Court acknowledged that the birthright rule has always carried a small set of exceptions, and those exceptions still stand:
- Children of accredited foreign diplomats with full immunity are not considered subject to U.S. jurisdiction. The State Department maintains the list of qualifying diplomats. If one parent is a diplomat and the other is a U.S. citizen, the child does receive citizenship at birth.7U.S. Department of State. 8 FAM 301.1 Acquisition by Birth in the United States
- Children born on foreign government vessels in U.S. waters are treated as born under foreign jurisdiction.
- Children born to members of a hostile occupying force are excluded.
These situations are rare. The overwhelming majority of children born on American soil are citizens at birth, whether their parents are citizens, lawful permanent residents, visa holders, or undocumented.
Why the Case Is Back in the News
On January 20, 2025, President Trump signed an executive order titled “Protecting the Meaning and Value of American Citizenship.” It directed federal agencies to stop recognizing the citizenship of children born in the U.S. when the mother was either unlawfully present or on a temporary visa, unless the father was a citizen or lawful permanent resident. The order was set to take effect 30 days after signing.8The White House. Protecting The Meaning And Value Of American Citizenship
It never took effect. Senior U.S. District Judge John Coughenour in Washington state issued a temporary restraining order on January 23, 2025, and within weeks federal judges in Maryland, New Hampshire, and Massachusetts followed with additional injunctions. Courts found the order likely unconstitutional, and the government has continued to recognize the citizenship of all babies born on U.S. soil.
The dispute reached the Supreme Court through Trump v. Barbara, a class action originating in New Hampshire. The Court agreed in December 2025 to hear the case and held oral arguments on April 1, 2026, with a decision expected before July 2026. It is the most direct challenge to Wong Kim Ark since the case was decided. The constitutional question is the same one Justice Gray and Chief Justice Fuller fought over: does “subject to the jurisdiction thereof” mean anyone born under American law, or does it require something more? Whichever way the Court answers will decide whether Gray’s broad reading holds or Fuller’s narrower vision finally commands a majority.