The Supreme Court will hear arguments Wednesday in a case that could produce a historic ruling on whether children born in the United States are automatically U.S. citizens. The case arises from President Trump’s executive order on the first day of his second term attempting to bar automatic citizenship for babies born here to parents who entered the country unlawfully or who were in the U.S. only temporarily on visas.
Trump has repeatedly argued that the Constitution does not guarantee birthright citizenship, calling the practice “absolutely ridiculous” and saying the nation is unique in offering it. In fact, roughly 33 countries, mostly in the Americas, also have birthright citizenship, including Canada, Mexico, Brazil and Argentina.
To understand the stakes, it helps to review U.S. history. The founders did not define citizenship in the original Constitution, but they were generally pro-immigrant, aiming to populate a largely unsettled continent. Citizenship was explicitly defined after the Civil War in the 14th Amendment, adopted to overturn the Dred Scott decision, which had held that Black people could not be U.S. citizens. The 14th Amendment declares, in part: “All persons born or naturalized in the United States and subject to the jurisdiction thereof, are citizens of the United States.”
Trump and his supporters argue the amendment’s reach was intended to be narrower — focused on formerly enslaved people — and not meant to confer citizenship on children of all who happen to be born on U.S. soil. “This was meant for the slaves … for the children of slaves,” Trump said. Advocates of the narrower reading also emphasize language in earlier court opinions suggesting parental allegiance matters.
Legal scholars who defend the broad reading note the Amendment’s multiple purposes: to create a clear rule for citizenship, to make former slaves and their children citizens, and to encompass immigrants. Amanda Frost, a University of Virginia law professor and author of a forthcoming book on the Citizenship Clause, points out that 19th-century immigration waves produced children who, once born in the U.S., became citizens under the 14th Amendment.
The central precedent likely to shape the Court’s decision is United States v. Wong Kim Ark (1898). Wong was born in San Francisco in 1873 to Chinese parents who later went to China. When Wong sought to return to the U.S. after a trip, he was denied entry on the grounds he was not a citizen. The Supreme Court, by 6-2, ruled that a child born in the U.S. to foreign-born parents and subject to U.S. jurisdiction is a citizen under the 14th Amendment. The Court treated a few narrow exceptions as explicit in the amendment: children of foreign diplomats, children of occupying forces, and children of Native American tribes (the latter exception has been eliminated by later statutes).
The Trump administration argues Wong’s facts differ from modern births because his parents had established permanent residence, whereas many today are in the country without authorization or on temporary visas. Organizations aligned with Trump, like America First Legal, contend that a child’s citizenship should depend on the parents’ allegiance and legal status, framing unauthorized entry as evidence of a lack of allegiance.
Opponents of the executive order say the amendment’s text and history show the framers intended to confer citizenship on the child, not punish children for their parents’ actions. “We do not punish children for the sins of their fathers,” Cecillia Wang, legal director of the ACLU, will tell the Court. The ACLU argues an executive order cannot rewrite a constitutional guarantee put in place by Congress and the states after extensive debate in 1866–1868.
Practical and humanitarian consequences of voiding birthright citizenship are central to the opposition’s argument. If large numbers of U.S.-born children were stripped of citizenship, some could become stateless if their parents’ countries do not recognize them. The U.S. Conference of Catholic Bishops and other faith groups warn that generations of stateless children could form a permanent underclass with no nationality and no clear legal protections.
The administration cites national security concerns and the perceived problem of “birth tourism,” where people travel to the U.S. to give birth so a child gains citizenship. Even critics concede such cases exist, but data show they are a tiny fraction of births: estimates put birth-tourism births at roughly 20,000 to 26,000 a year versus about 3.6 million total U.S. births. Supporters of the administration respond that even a single illegal act matters.
Democratic and civil-rights advocates highlight the long legal continuity protecting birthright citizenship. Even during periods of aggressive immigration enforcement — for example, mass removals in the 20th century — the rule that children born on U.S. soil are citizens has persisted. During World War II, Japanese Americans detained as enemy aliens nonetheless had newborn children who were automatically citizens when born on U.S. soil. Congress reinforced the understanding over the mid-20th century.
The debate includes practical procedural questions that justices have raised previously. How would hospitals verify parents’ immigration status when a child is born? What would happen to newborns whose parents are undocumented? What systems would states and federal agencies use to determine a child’s citizenship? Last year, when similar issues were discussed, Justice Brett Kavanaugh asked how hospitals would know and what would be done; the government’s answer was that federal officials would have to figure that out.
Experts also warn of unintended demographic effects. Some research suggests repealing birthright citizenship could increase the undocumented population over time, because children who would otherwise have been citizens might remain in the U.S. without legal status and pass that lack of status to their own children. The Population Research Institute at Penn State estimated that repealing birthright citizenship could result in millions more people living here illegally by mid-century.
The case has drawn political support on both sides. Some Republican senators and House members filed briefs supporting Trump’s view, while civil-rights groups, immigrant-rights organizations, and religious leaders urged the Court to preserve the long-standing understanding of the 14th Amendment.
At issue is whether the executive branch can, by fiat, change a constitutional protection that has guided American law for 160 years, or whether the textual and precedential framework — notably Wong Kim Ark — continues to mean that almost everyone born on U.S. soil is a citizen. The Court’s decision will have far-reaching legal and social consequences, affecting children born in the United States now and for generations to come.