The Supreme Court’s June 30, 2026, 6-3 decision in Trump v. Barbara resolved the challenge to President Trump’s executive order restricting birthright citizenship under the Fourteenth Amendment’s Citizenship Clause, with Chief Justice Roberts writing for a majority that included both conservative and liberal justices. The administration did not file a petition for rehearing by the July 27 deadline, despite earlier public statements indicating intent to do so. The Court has not granted rehearing in an argued case for more than five decades, and no new docket developments or intervening litigation have altered that posture ahead of the December 31, 2026, resolution date. Traders view these procedural and institutional barriers as decisive.