Wong Kim Ark vs. U.S.: Birthright Citizenship Ruling Back in Court

In Wong Kim Ark v. United States, decided March 28, 1898, the Supreme Court ruled 6–2 that a child born on American soil is a citizen of the United States at birth, whatever the nationality or immigration status of the parents. The decision reads the Fourteenth Amendment’s Citizenship Clause through centuries of common law: birthplace controls, not bloodline. It remains the controlling authority on birthright citizenship in the United States more than 125 years later.¹

What the Supreme Court Held

Justice Horace Gray wrote for the majority. The opinion turned on a single phrase in the Fourteenth Amendment: “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.”² The Court read “subject to the jurisdiction thereof” to mean the same thing as being “within the limits and under the jurisdiction of the United States,” language that had appeared in naturalization statutes for decades. Anyone physically present in the country and obligated to obey its laws is subject to its jurisdiction.¹

Gray traced the rule back to Calvin’s Case, an English decision from 1608 holding that anyone born within the king’s dominions and under his protection was a natural-born subject regardless of parental nationality. The American colonies inherited that rule, and the Fourteenth Amendment, Gray concluded, wrote it into the Constitution.³

The Court also held that Congress could not override the constitutional guarantee through immigration legislation. The Chinese Exclusion Act of 1882 had barred Chinese laborers from immigrating and, in Section 14, prohibited any court from naturalizing Chinese residents.⁴ None of that mattered for Wong Kim Ark himself. A statute, however sweeping, cannot strip away a right the Constitution confers at birth.

The Facts of the Case

Wong Kim Ark was born in 1873 at 751 Sacramento Street in San Francisco. His parents were subjects of the Emperor of China who had settled in California and were running a business there. They were not diplomats and held no official position with any foreign government.¹

He visited China as a young man and returned without trouble; customs officials treated him as a native-born resident. In 1894 he traveled to China again. When he came back aboard the steamship Coptic in August 1895, the Collector of Customs at San Francisco refused to let him land. The sole reason given was that he was not a citizen. Detained on the ship, he filed a petition for a writ of habeas corpus in federal district court in October 1895. The district court ordered him released, holding that he was a citizen. The government appealed to the Supreme Court.⁶

The Argument the Court Rejected

The government’s position was that citizenship should follow bloodline. Because Wong Kim Ark’s parents remained subjects of the Emperor of China, the argument went, he inherited their nationality. And because the Chinese Exclusion Act permanently barred his parents from naturalizing, no child of theirs could claim the benefits of American citizenship.

To reach that result, the government read “subject to the jurisdiction thereof” narrowly. Simple physical presence was not enough; true jurisdiction required full political allegiance, which Chinese residents supposedly owed to the Emperor by hereditary bond. Under that reading, Congress could effectively decide who counted as a birthright citizen by choosing which nationalities were eligible for naturalization. The majority rejected the reading and its consequences.

The Dissent

Chief Justice Melville Fuller, joined by Justice John Marshall Harlan, dissented. They argued that citizenship should turn on parental nationality and that the jurisdiction requirement demanded something closer to full political membership than mere physical presence. In their view, granting citizenship to the American-born children of immigrants whom Congress had declared ineligible for naturalization made no sense. The majority read the common-law tradition too broadly, they said, and the framers of the Fourteenth Amendment had intended a more demanding test. The dissent has not gained traction in later case law.

Who the Ruling Does Not Cover

The Court identified a small set of exceptions to the birthplace rule. They are narrow and have stayed essentially unchanged since 1898.

Children of accredited foreign diplomats. Ambassadors, ministers, and other officials on the State Department’s Diplomatic List are treated as representatives of their home country rather than subjects of ordinary American law. Their U.S.-born children do not acquire citizenship.5U.S. Citizenship and Immigration Services. USCIS Policy Manual Volume 7 Part O Chapter 3 – Children Born in the United States to Accredited Diplomats⁷
Children born to members of a foreign occupying force during hostile occupation of U.S. territory. Those soldiers are imposing their own law rather than submitting to American law.⁸
Children born on foreign public vessels, such as a foreign warship in an American port, which is treated as sovereign territory of the foreign nation.⁹

Outside those categories, the rule is simple. A child born in the United States is a citizen whether the parents are citizens, lawful permanent residents, temporary visitors, or present without authorization. The principle is codified at 8 U.S.C. § 1401(a), which grants citizenship at birth to “a person born in the United States, and subject to the jurisdiction thereof.”¹⁰

The opinion also carved out members of Native American tribes who owed direct allegiance to tribal governments, an exception that traced to Elk v. Wilkins (1884). Congress closed that gap with the Indian Citizenship Act of 1924, and 8 U.S.C. § 1401(b) now confirms citizenship at birth for persons born to members of Native American and other aboriginal tribes.¹¹¹⁰ That exception no longer has practical effect.

Why the Case Is Back in Court

For more than a century after the decision, birthright citizenship functioned as settled law. On January 20, 2025, President Trump signed an executive order directing the federal government to deny citizenship to children born in the United States whose parents were neither citizens nor lawful permanent residents. The order sought to redefine “subject to the jurisdiction thereof” to require at least one parent to hold legal immigration status, reviving the theory the government lost in 1898.

Every federal court that considered the order blocked it. The case reached the Supreme Court as Trump v. Barbara, and oral arguments were held on April 1, 2026. During more than two hours of argument, a majority of the justices expressed skepticism that a president could reinterpret a constitutional provision the Court construed 125 years ago. A decision is expected by late June or early July 2026.

Whatever the Court does next, the durability of Wong Kim Ark rests on the plainness of its rule. If you were born on American soil and your parents were not diplomats, enemy soldiers, or aboard a foreign warship, you were a citizen the moment you were born.