Trump Administration’s Denaturalization Efforts: What’s Legal and What’s Not

The Trump administration has repeatedly signaled its intent to denaturalize U.S. citizens, but legal experts warn that such efforts face significant constitutional and historical barriers. Last week, The New York Times reported that the Justice Department plans to formally denaturalize more than 300 naturalized U.S. citizens—a move that would mark the largest single push for citizenship stripping in modern American history.

What Denaturalization Means and Why It Matters

Denaturalization refers to the legal process of revoking U.S. citizenship from naturalized citizens. While the administration’s threats have sparked outrage among critics, it is critical to understand the legal boundaries of such actions. Natural-born citizens—those who acquired citizenship at birth—cannot be denaturalized under any circumstances. The Fourteenth Amendment’s citizenship clause, ratified in 1869, explicitly protects birthright citizenship, placing it beyond the reach of political debate.

Historical Precedents and Legal Limits

Denaturalization is not a new tactic, but its legal scope has evolved significantly over time. During the first Red Scare in the late 1910s, the Wilson administration targeted Russian American anarchist Emma Goldman for her antiwar activism. Federal officials invalidated her husband’s naturalized citizenship on grounds of alleged fraud, arguing that her citizenship—acquired through marriage—was also invalid. Goldman accepted deportation to the newly formed Soviet Union in 1919.

In response to such abuses, Congress and the Franklin D. Roosevelt administration sought to clarify the conditions under which citizenship could be revoked. The Nationality Act of 1940 consolidated decades of piecemeal legislation, outlining specific circumstances in which a U.S. citizen could lose their citizenship. The Supreme Court later summarized these conditions as follows:

• A citizen loses nationality by becoming naturalized in a foreign country;
• Taking an oath of allegiance to a foreign state;
• Entering or serving in the armed forces of a foreign state;
• Being employed by a foreign government in a position restricted to its nationals;
• Voting in a foreign political election or plebiscite;
• Using a foreign passport as proof of nationality;
• Formally renouncing U.S. citizenship before a consular officer abroad;
• Deserting the U.S. armed forces during wartime (upon conviction by court-martial);
• For naturalized citizens, residing in their former country of nationality or birth for two years if they acquire that country’s nationality;
• For naturalized citizens, residing in their former country of nationality or birth for three years.

What the Trump Administration Can—and Cannot—Do

Despite its aggressive rhetoric, the Trump administration’s ability to denaturalize citizens is severely restricted by law. Natural-born citizens are constitutionally protected, and denaturalization efforts can only target naturalized citizens under the narrow conditions outlined in the Nationality Act of 1940. The recent push to denaturalize over 300 citizens would require the Justice Department to prove that each individual falls under one of these specific categories—a process that is both legally complex and politically contentious.

The administration’s repeated threats to denaturalize citizens have drawn sharp criticism from legal scholars and immigrant rights advocates. Critics argue that such efforts are not only legally dubious but also undermine the foundational principle of birthright citizenship enshrined in the Fourteenth Amendment.