John Sauer, the current U.S. Attorney General, is leading the legal defense of President Donald Trump’s controversial executive order that seeks to limit birthright citizenship.
In an argument before the United States Supreme Court, Sauer framed the administration’s position as a necessary correction to longstanding legal interpretations.
“Unlimited primogeniture is contrary to the practice of the vast majority of modern nations,” Sauer told the court.
“This signifies the priceless and profound gift of American citizenship.”
Follow updates on the Supreme Court’s Birthright Citizenship hearings here
A key legal voice in Trump’s agenda
Since taking over as solicitor general in 2025, Sauer has become one of the administration’s most important legal strategists, arguing major cases involving executive branch, immigration and federal authority.
He previously represented Trump in the high-stakes case Trump v. United States, which resulted in a landmark decision granting presidents broad immunity for acting in the course of official duties.
A career rooted in conservative legal thinking
Prior to his current role, Sauer served as Missouri’s Solicitor General from 2017 to 2023, where he was involved in several politically charged legal efforts.
Notably, he signed a multi-state legal challenge seeking to overturn the results of the 2020 US presidential election.
Elite academic and legal background
Sauer’s academic degrees reflect a traditional path through elite institutions:
-Bachelor’s Degree in Philosophy and Electrical Engineering from Duke University
-Rhodes Scholar at the University of Oxford, where he studied theology
– Master’s degree in philosophy from the University of Notre Dame
-He studied law at Harvard Law School, where he served as editor of the Harvard Law Review
-Internship and early legal career
Early in his career, Sauer worked as a law firm for prominent conservative lawyers, including U.S. Supreme Court Justice Antonin Scalia.
He later worked in private practice, served as a federal prosecutor in Missouri, and established his own law firm, building a reputation for constitutional and appellate litigation.
Arguments about birthright citizenship
In the current case, Sauer urges the court to reinterpret the citizenship clause of the 14th Amendment, arguing that non-citizen children are not fully “subject to the jurisdiction” of the United States.
He also disputed the historical interpretations cited by opponents, saying there was a “general consensus that aliens do not have children who become citizens.”
However, his position faced skepticism from several judges across ideological lines.
A role in a case with far-reaching impact
The birthright case — tied to the United States v. Wong Kim Ark precedent — could redefine who qualifies as a U.S. citizen.
With an estimated 250,000 births annually potentially affected, Sauer’s arguments put him at the center of one of the most consequential constitutional battles of recent decades.
Read also | US Supreme Court signals skepticism over Trump’s citizenship order team
