The Supreme Court’s June 30, 2026, decision in Trump v. Barbara upheld birthright citizenship under the 14th Amendment’s Citizenship Clause by a 6-3 vote, with Chief Justice Roberts writing the majority opinion joined by Justices Barrett, Sotomayor, Kagan, and Jackson. No petition for rehearing was filed by the July 27 deadline, despite earlier administration statements suggesting one might be submitted. The Court grants rehearings only in rare cases involving overlooked precedent, newly discovered facts, or clear errors, none of which appear present after a full term that included oral argument and a detailed opinion. With the 2025-2026 term concluded and no active case pending on the issue, traders assign very low odds to any grant by December 31. Shifts could still arise from an unanticipated late filing, a related new case reaching the docket, or unforeseen changes in Court composition before year-end.