The U.S. Supreme Court appeared unconvinced by President Trump’s effort to restrict automatic citizenship at birth, raising serious questions during oral arguments over a case that could redefine who qualifies as an American.

President Trump attended roughly 90 minutes of arguments, becoming the first sitting president to observe Supreme Court proceedings in person. He sat quietly in the gallery and left before opposing counsel, representing the American Civil Liberties Union, finished opening remarks.

At issue is Trump’s 2025 executive order seeking to limit citizenship only to children born to U.S. citizens or lawful permanent residents. The policy challenges the long-standing interpretation of the Fourteenth Amendment, which states that all “persons born or naturalized in the U.S. and subject to the jurisdiction thereof” are citizens—a principle reinforced by federal law and court rulings for over a century.

Several members of the court—across ideological lines—voiced skepticism about the administration’s legal reasoning. Chief Justice John Roberts dismissed claims that modern conditions justify reinterpreting the Constitution, replying, “It’s the same Constitution.” Conservative justices Amy Coney Barrett and Neil Gorsuch also pressed government lawyers on the foundations of their argument, while liberal justices raised concerns about reliance on obscure or outdated sources.

Roberts criticized the administration for stretching narrow historical exceptions—such as children of diplomats—into a sweeping rule affecting millions, while Gorsuch similarly cast doubt on the legal sources cited, noting they may not support the government’s position.

Solicitor General D. John Sauer argued that citizenship should depend on a parent’s “allegiance” to the U.S., suggesting the Constitution’s jurisdiction clause excludes children of undocumented immigrants or temporary visitors. But justices questioned how that interpretation aligns with historical intent or precedent—especially the landmark United States v. Wong Kim Ark decision, which affirmed birthright citizenship broadly.

If upheld, the executive order would introduce major changes, including new systems to verify citizenship at birth rather than relying on birth certificates alone. Critics say that could create confusion, legal disputes, and even statelessness for some children. The administration argued that unrestricted birthright citizenship acts as a “pull factor” for illegal immigration, but justices questioned both the scale of that claim and its relevance to constitutional interpretation.

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