The US Supreme Court handed down a landmark judgment yesterday, striking down President Donald Trump's executive order that had sought to end birthright citizenship for children born on American soil to undocumented immigrants and temporary visitors. By a 6-3 vote, the justices rejected the order, reaffirming a principle that has underpinned American constitutional law for well over a century: that almost anyone born within the United States is automatically a citizen.
However, on the actual constitutional question, the court split just 5-4. One conservative justice agreed with the outcome yet refused to sign onto the majority's reasoning, hinting instead that Congress, rather than a president acting alone, might one day be able to restrict birthright citizenship through ordinary legislation.
Immigration rights groups are calling the ruling a victory that shields roughly 250,000 children a year from the danger of statelessness. Conservatives, meanwhile, see something else in that narrow 5-4 split: a sign the fight is not over.
Chief Justice John Roberts wrote for the majority, joined by Justice Amy Coney Barrett and the court's three liberals, Ketanji Brown Jackson, Elena Kagan and Sonia Sotomayor. Their reasoning leaned on the Citizenship Clause of the 14th Amendment, which states plainly that anyone born in the United States and subject to its jurisdiction is a citizen. Roberts traced this back through English common law and the 1898 case of United States v. Wong Kim Ark, which confirmed that children born on American soil are citizens no matter their parents' nationality, barring a few narrow exceptions such as the offspring of foreign diplomats.
Roberts dismissed the administration's claim that citizenship should only extend to children whose parents were lawfully present, pointing out that the constitution says nothing about immigration status or lawful residence. Quoting former chief justice Earl Warren, he wrote that citizenship has always meant "the right to have rights."
Justice Jackson went further in a separate opinion, framing the decision within the wider story of post-Civil War America. She described the 14th Amendment as an "anticaste, antisubordination reset for the Nation," built to guarantee equal belonging rather than open the door to fresh exclusions.
History ran through the whole judgment. American law follows jus soli, citizenship by birthplace, rather than the jus sanguinis model many other nations use, where citizenship flows from parentage. The majority stressed that the 14th Amendment, ratified in 1868, existed specifically to overturn the notorious Dred Scott vs Sandford (1857) decision, which had denied citizenship to Black Americans descended from enslaved people. Trump's order, in their eyes, went against that very history.
The dissenters saw things very differently. Justices Clarence Thomas, Samuel Alito and Neil Gorsuch argued the majority had leaned too heavily on English common law tradition and too little on the principles of the American founding, which they said rested on consent rather than inherited legal custom. Citizenship, they argued, demands genuine allegiance, something that cannot simply pass to children of parents who entered or remained in the country unlawfully. Alito went so far as to warn the ruling would keep fuelling "birth tourism," while Thomas accused the majority of stretching the amendment far beyond what its framers intended.
The opinion likely to matter most in the long run, though, came from Justice Brett Kavanaugh. He sided with the majority in striking down Trump's order, but for entirely different reasons: he found the order unlawful under the Nationality Act of 1940 and related federal statutes, not the constitution itself. That distinction matters enormously, since it implies Congress, unlike the president, might still have room to legislate on the issue.
Trump reacted with predictable frustration, calling the decision "too bad" on Truth Social while urging lawmakers to pass legislation ending birthright citizenship outright. Given the Senate filibuster, such a bill faces long odds for now, but the ruling guarantees the issue will remain politically alive.
No wonder, many advocates remain wary, noting that the narrow constitutional margin breathes new life into arguments once thought settled, especially against the backdrop of an administration that has already introduced more than 700 immigration restrictions since returning to office.
