The Supreme Court ruled 6-3 that the 14th Amendment guarantees birthright citizenship, permanently blocking Trump's executive order in a decision authored by Chief Justice Roberts.
The Supreme Court ruled 6-3 on June 30, 2026, that the Constitution guarantees automatic birthright citizenship to virtually all children born in the United States, striking down a Trump administration executive order that had sought to reinterpret the 14th Amendment's Citizenship Clause [1]. Chief Justice John Roberts authored the majority opinion [1]. The ruling forecloses the executive order entirely, ending litigation that had produced uniform losses for the government in every lower court that reviewed the policy [2].
The case, *Trump v. Barbara*, arrived at the Court after a series of injunctions blocked the executive order at the district and appellate levels [2]. The administration had argued that the Citizenship Clause, which grants citizenship to persons born or naturalized in the United States and subject to its jurisdiction, did not extend to children of undocumented immigrants or temporary visa holders [1]. Federal courts at each prior stage rejected that reading, and the Supreme Court's grant of certiorari set up a definitive resolution of the constitutional question [2].
The decision carries broad doctrinal weight. The Court's majority holding settles the operative interpretation of the Citizenship Clause as a matter of federal constitutional law, binding all executive agencies and foreclosing any future presidential attempt to narrow birthright citizenship by executive action alone [1]. Because the ruling addresses the constitutional floor, rather than a statutory scheme, Congress cannot override it by ordinary legislation, and only a constitutional amendment could alter the outcome [2]. The 6-3 alignment, with Roberts writing for the majority, signals that the holding drew support from across the Court's ideological spectrum [1].
The immediate practical effect is that the original Day One executive order will never take effect [1]. Federal agencies responsible for issuing passports, Social Security numbers, and immigration documents must continue applying existing birthright citizenship standards [2]. The three dissenting justices did not, according to available reporting, produce a majority counterproposal that would cabin the ruling's scope. Parties who had joined the consolidated litigation as plaintiffs, including state attorneys general and immigration advocacy organizations, secured a permanent victory without any remand [2]. No further proceedings in this matter are anticipated at the Supreme Court level, and the lower-court injunctions that had been in place are now superseded by the constitutional holding itself [1].