The Supreme Court has ruled, 5–4, in Trump v. Barbara that President Trump’s January 20, 2025, Executive Order restricting birthright citizenship is unconstitutional. The decision reaffirms what was widely recognized as settled law for over a century: every child born on U.S. soil is a citizen of the United States, regardless of the immigration status of their parents. 

Chief Justice Roberts wrote the majority opinion, joined by Justices Sotomayor, Kagan, Barrett, and Jackson. Justice Jackson filed a concurring opinion (joined in part by Justice Sotomayor); Justice Kavanaugh concurred in the judgment but dissented in part; and Justices Thomas, Alito, and Gorsuch each filed separate dissents. 

Background 

On the first day of his second term, President Trump signed an executive order redefining the Fourteenth Amendment’s citizenship clause, claiming that children born to parents who are either unlawfully present or present on temporary visas are not “subject to the jurisdiction” of the United States — and therefore not entitled to automatic citizenship. The order was immediately challenged in federal courts and has never taken effect. 

The administration’s central argument rested on a novel interpretation of the legal concept of “domicile,” contending that the citizenship clause requires a parent to be lawfully present on a permanent basis before a child born in the U.S. can claim citizenship.  

The Court’s Ruling 

The majority rejected the administration’s domicile argument and reaffirmed the Court’s 1898 landmark decision, United States v. Wong Kim Ark, which established the “ancient and fundamental rule of citizenship by birth within the territory,” including all children born here of resident noncitizens. The Court held that redefining the scope of the Fourteenth Amendment’s citizenship clause requires a constitutional amendment, not an executive order. 

The majority opinion grounded its reasoning in three key points that HR and global mobility teams should understand: 

• Common-law roots. The Court traced the “subject to the jurisdiction” language back to English common law and pre-Fourteenth Amendment American practice, under which children born within a sovereign’s territory were citizens regardless of how “momentary and uncertain” their parents’ presence, with only narrow exceptions. 

• “Jurisdiction” means subject to U.S. law, not parental allegiance. The Court held that “subject to the jurisdiction” refers to a nation’s power to govern those physically present within its territory, not the immigration status or allegiance of a child’s parents. Under this standard, foreign nationals present in the U.S. for business, work, or even unlawfully are still subject to U.S. law, and any children they have here are citizens at birth.  

• The domicile theory was rejected on textual and historical grounds. The Court found scant historical evidence that ratifiers of the Fourteenth Amendment intended a domicile-based limitation, noting that terms central to the Executive Order — “mother,” “father,” “lawful,” “temporary” — appear nowhere in the constitutional text itself.  

What This Means for HR Teams 

For most employers, today’s decision confirms that the legal landscape governing citizenship documentation has not changed. Birth certificates remain definitive proof of U.S. citizenship. I-9 and E-Verify processes are unaffected. 

The practical stakes of this case were significant: hundreds of thousands of children are born each year in the United States to noncitizen parents. Had the executive order taken effect, HR teams would have faced new documentation burdens for affected employees and their families, and a growing population of U.S.-born individuals without clear citizenship status. That uncertainty has been resolved, and the Court’s reasoning makes clear there is no narrow carve-out lurking for employees on temporary visas or unlawful status: their U.S.-born children are now definitively citizens at birth. 

The Meltzer Hellrung Perspective 

This decision is an important win for employers and foreign national employees alike. It preserves the predictability that HR and global mobility teams rely on when onboarding employees, verifying work authorization, and supporting families navigating the immigration system. 

It should be noted that this ruling does not signal a change in the Administration’s heightened focus on immigration enforcement. The administration retains wide authority over visa policy, enforcement priorities, and naturalization standards, and we expect continued activity across all areas. Employers should remain aware of developments affecting employees on temporary nonimmigrant status and their U.S.-born children. Given the 5–4 split and the number of separate opinions, we will also be watching for any subsequent litigation or legislative efforts seeking to relitigate aspects of this question. 

Should you have any questions about the Supreme Court’s ruling or any other immigration policies affecting your workforce or your immigration program, please contact your Meltzer Hellrung professional.