Trump's Birthright Citizenship Order Conflicts With 75 Years of Federal Law, Legal Scholars Argue

The Administration's End Run Around Congress

The Trump administration's executive order attempting to strip birthright citizenship from children of undocumented immigrants faces a straightforward legal problem: it conflicts with 75 years of settled federal law. Legal scholars are pointing out that the Supreme Court can reject the order without even wading into the deeper constitutional questions about the Fourteenth Amendment.

At oral argument last week in United States v. Barbara, the administration struggled to explain how the President can unilaterally rewrite citizenship law -- a power the Constitution explicitly grants to Congress, not the executive branch.

What Federal Law Actually Says

Since 1940, federal statute 8 U.S.C. Section 1401 has stated clearly that any "person born in the United States, and subject to the jurisdiction thereof" is a citizen. When Congress enacted this language in 1940 and reaffirmed it in 1952, it adopted the conventional understanding of birthright citizenship that had prevailed for generations.

The historical record is unambiguous. During World War II, children born to Japanese citizens were recognized as U.S. citizens even as their parents were classified as enemy aliens. This directly contradicts the Trump administration's novel emphasis on "allegiance" as a prerequisite for citizenship.

For decades, all three branches of government have consistently interpreted Section 1401 to embody this conventional understanding. Supreme Court decisions routinely assume that all people born in the United States are citizens, regardless of their parents' immigration status.

The President Cannot Act Alone

Under the doctrine of statutory stare decisis, this long-standing interpretation should control even if someone believes the conventional account is wrong. As the Supreme Court reaffirmed in 2024's Loper Bright decision, "every statute's meaning is fixed at the time of enactment."

The Constitution gives Congress -- not the President -- the power to make laws concerning naturalization and to enforce the Fourteenth Amendment. Trump's executive order attempts to bypass Congress entirely, claiming unilateral authority to redefine who counts as a citizen.

When pressed at oral argument about what upholding the executive order would mean for millions of Americans who cannot trace their lineage to lawful permanent residents, Solicitor General Sauer insisted the administration only seeks prospective relief. But that dodge does not answer the constitutional question. If the administration's legal theory is correct -- that only children of citizens and lawful permanent residents qualify for birthright citizenship -- then the citizenship of millions of existing Americans would be called into question.

Justice Amy Coney Barrett highlighted another problem: how would anyone determine "domicile," one of the administration's proposed tests? The practical implications are a nightmare of bureaucratic uncertainty.

Congress Has Not Acted

Some legal scholars argue that Congress retains power to adjust the contours of birthright citizenship by defining the bounds of U.S. jurisdiction under Section 5 of the Fourteenth Amendment. That may be true. But Congress has not exercised this power. Instead, Congress has repeatedly reaffirmed the prevailing understanding of birthright citizenship through federal statute.

The Trump administration wants the Supreme Court to let the President do what Congress has not done -- and what the Constitution does not permit him to do alone.

The Easy Path Forward

The Court has a straightforward off-ramp. It can strike down the executive order as conflicting with federal law and leave for another day the question of whether Congress could narrow birthright citizenship through legislation. That would preserve separation of powers, respect statutory precedent, and avoid casting doubt on the citizenship of millions of Americans.

Whether the justices take that easy path or dive into the constitutional morass remains to be seen. But the legal case against Trump's unilateral action is clear: you cannot rewrite federal law by executive decree, no matter how much you dislike the current rules.