On June 30, 2026, the Supreme Court issued its decision in Trump v. Barbara, blocking the federal government from implementing President Trump’s executive order restricting birthright citizenship. The Court affirmed a nationwide preliminary injunction, meaning that the executive order could not take effect anywhere in the country while the case was in process. Five Justices concluded that the executive order violated the Citizenship Clause of the Fourteenth Amendment. A sixth Justice, Justice Brett Kavanaugh, agreed that the order could not be enforced because it conflicted with existing federal law. The decision is a significant development in the legal battle over birthright citizenship, one of the country’s longest-standing constitutional protections.