Denaturalization in 2026: Can the Government Take Away Your Citizenship?

What denaturalization is — and what it is not

Denaturalization is the legal process of stripping a naturalized U.S. citizen of citizenship and returning them to their prior immigration status — usually lawful permanent resident, sometimes nothing at all. It applies only to people who became citizens through naturalization. A person who is a citizen by birth in the United States under the Fourteenth Amendment cannot be denaturalized, because there is no naturalization grant to revoke.

It is important to separate denaturalization from two things it is often confused with. It is not the same as expatriation or "renunciation," which is the voluntary giving up of citizenship by the citizen's own act under INA § 349. And it is not something USCIS or DHS can do by issuing a letter. Since the Supreme Court's decision in Schneiderman v. United States, 320 U.S. 118 (1943), and reinforced in Afroyim v. Rusk, 387 U.S. 253 (1967), citizenship — once granted — carries strong constitutional protection. The government must go to a federal court and meet a demanding standard. No bureaucrat can sign your citizenship away.

The two legal tracks: civil and criminal

There are exactly two ways the government can denaturalize someone. They are very different in procedure and consequence.

Civil denaturalization under 8 U.S.C. § 1451(a)

This is a lawsuit. The Department of Justice files a civil complaint in the federal district court where the citizen lives, asking the court to set aside the naturalization order and cancel the certificate. The statute provides two grounds:

• Illegal procurement — the person did not actually meet a legal requirement for naturalization at the time it was granted (for example, lacked the required period of lawful permanent residence, lacked good moral character during the statutory period, or was statutorily ineligible).
• Concealment of a material fact or willful misrepresentation — the person obtained naturalization by hiding or lying about something that mattered to the decision.

Civil denaturalization has features that make it dangerous for the citizen: there is no statute of limitations, so the government can sue decades after the oath; there is no right to a jury; and there is no right to government-appointed counsel because it is civil, not criminal. If you cannot afford a lawyer, the court will not provide one. The only thing standing between the government and revocation is the high evidentiary burden — and a well-prepared defense.

Criminal denaturalization under 18 U.S.C. § 1425

The second track is a criminal prosecution for "procuring citizenship or naturalization unlawfully." If the government convicts a naturalized citizen under 18 U.S.C. § 1425, the court is required to revoke citizenship as part of the sentence under 8 U.S.C. § 1451(e). Because it is criminal, the defendant has the full suite of protections: the right to a jury, the right to appointed counsel, and the government's burden of proof beyond a reasonable doubt. The statute of limitations is 10 years from the offense. In practice the DOJ reserves criminal denaturalization for the most serious cases — war criminals, terrorists, serious fraud rings, and people who concealed grave crimes.

The materiality requirement: Maslenjak and Kungys

The single most important defensive concept in this area is materiality. Not every misstatement on an immigration form is grounds to lose citizenship. The Supreme Court has made that clear twice.

In Kungys v. United States, 485 U.S. 759 (1988), the Court held that a misrepresentation in the naturalization process is only disqualifying if it was material — meaning it had a "natural tendency to influence" the decision to grant citizenship. In Maslenjak v. United States, 582 U.S. 335 (2017), the Court went further in the criminal context, holding unanimously that the government must prove the illegal act actually played a role in obtaining citizenship. As Justice Kagan put it, the government cannot strip citizenship over an immaterial lie — a person who shaded the truth about a speeding ticket or a nickname has not thereby "procured" citizenship by fraud.

This matters enormously in 2026. As enforcement ramps up, the defense in most cases is not "I never made a mistake" — it is "the alleged mistake was not material, and the government cannot prove it changed the outcome." A naturalized citizen who left a job off a form, transposed a date, or misunderstood a question is in a very different position from someone who concealed a prior identity, a criminal conviction, or a removal order. The same care that goes into preparing honestly for the N-400 interview is what protects citizenship years later.

In our practice, the naturalized clients who call about a denaturalization letter are rarely the wrongdoers the headlines describe. What we see most often is a citizen of 10 or 15 years who is terrified by the news, combing their memory for a forgotten arrest that was dismissed or an old form they barely remember. The legal reality usually calms them: an immaterial omission, fully disclosed elsewhere or legally irrelevant, is not a path to losing citizenship. The cases that genuinely worry us are the narrow ones where a green card or asylum grant rested on a fact that was both false and decisive — and even then, the government still has to prove it.

What actually triggers a denaturalization case

The DOJ does not pull citizenship files at random. Cases almost always start with a specific trigger that puts old information in front of a prosecutor:

• Concealed criminal history — a serious crime (especially one committed before naturalization) that was hidden during the good-moral-character review, or a conviction that surfaces later and is traced back to the naturalization application.
• Fraud in the underlying immigration benefit — a marriage fraud finding, a fraudulent asylum claim, or a fake document that was the foundation for the green card and then the citizenship.
• Identity fraud — naturalizing under a false name, false date of birth, or a stolen or invented identity, often discovered through fingerprint or biometric matches.
• Prior removal orders concealed — an individual who had a deportation order under one identity and naturalized under another.
• Human rights and national security cases — concealment of participation in persecution, genocide, terrorism, or war crimes. These are the classic Fedorenko-style cases.
• Referrals and data matches — modern cases increasingly start when DHS data analytics connect an old A-file to information the applicant did not disclose.

What is not typically a real trigger: honest, immaterial errors; lawful conduct that the government simply dislikes; or political speech. The constitutional protections around citizenship exist precisely to keep denaturalization from becoming a tool of viewpoint punishment.

The 2025-2026 enforcement shift

Denaturalization is not new — the modern statute dates to 1906 and the case law to the 1940s. What changed is priority and resourcing. In June 2025, the DOJ Civil Division issued internal guidance directing its attorneys to prioritize denaturalization proceedings and to pursue them in a broader set of cases than the historically narrow war-crimes and serious-fraud band. The practical effects we are watching in 2026:

• More civil filings under § 1451(a), where the procedural protections for the citizen are thinnest.
• Greater use of DHS data-matching to reopen old naturalization files.
• Increased anxiety among lawfully naturalized citizens who did nothing wrong — which is itself a reason to know the law and not be intimidated.

The honest framing for clients is this: the universe of people genuinely at risk is small and defined by material fraud or statutory ineligibility at the time of naturalization. But the process is real, the government's posture is more aggressive, and a person who receives any inquiry about their naturalization should treat it as serious and get counsel immediately — not answer questions alone.

How a naturalized citizen fights back

A denaturalization case is winnable, and the government loses these cases when the defense is built early and correctly. The core defenses:

1. No material misrepresentation. The alleged error did not have a natural tendency to influence the decision, and under Maslenjak the government cannot show it changed the outcome.
2. The fact was disclosed or known. If the information was actually before the adjudicator, there was no concealment.
3. The requirement was met. For "illegal procurement" claims, prove the person actually satisfied the eligibility requirement (residence, physical presence, good moral character) at the relevant time.
4. Failure of proof. Hold the government to its clear, convincing, and unequivocal burden. Memories fade, records are incomplete, and old files are often thin — the burden is on the government, not the citizen.
5. Intent. Willful misrepresentation requires more than a mistake; an innocent or good-faith error is not willful.

Just as important is what not to do: do not respond to a DOJ or USCIS inquiry about your naturalization without a lawyer, do not give a recorded statement, and do not assume that "explaining" the situation will make it go away. Anything said can become evidence. The same care that applies in a marriage-based green card interview applies with even higher stakes here.

If citizenship is revoked: the downstream consequences

Losing naturalized citizenship does not usually leave a person stateless, but the consequences are severe:

• Reversion to prior status. The person typically returns to lawful permanent resident status — unless the green card itself was fraudulently obtained, in which case removal proceedings often follow.
• Removability. If the underlying basis was fraud, the former citizen may face deportation as a green card holder on the very grounds that supported the denaturalization.
• Derivative citizenship of children. Children who became citizens solely through the denaturalized parent (former INA §§ 320-321) can lose derivative citizenship. Children who are citizens by U.S. birth are unaffected.
• Loss of federal benefits and the passport. The U.S. passport is revoked and federal rights tied to citizenship (voting, certain jobs, sponsorship ability) end. This is also why understanding how dual citizenship interacts with U.S. status matters before, not after, a problem arises.

Because the stakes cascade across an entire family, denaturalization defense is never just about one person's certificate — it is about everyone whose status flows from it.

Frequently asked questions

Can the government really take away my U.S. citizenship after I am naturalized?

Yes, but only through a federal court — either a civil action under 8 U.S.C. § 1451(a) or a criminal conviction under 18 U.S.C. § 1425. USCIS and DHS cannot revoke a certificate on their own, and the government must prove its case by clear, convincing, and unequivocal evidence.

Is there a statute of limitations on civil denaturalization?

No. Civil denaturalization under 8 U.S.C. § 1451(a) has no statute of limitations, so the government can file decades after the oath. Criminal denaturalization under 18 U.S.C. § 1425 has a 10-year statute of limitations.

What is the difference between civil and criminal denaturalization?

Civil denaturalization is a DOJ lawsuit with no jury and no appointed counsel; the result is loss of citizenship. Criminal denaturalization is a prosecution with a jury, appointed counsel, and proof beyond a reasonable doubt; revocation is automatic on conviction under 8 U.S.C. § 1451(e).

Does a small mistake on my N-400 put my citizenship at risk?

No. Under Maslenjak (2017) and Kungys (1988), the misrepresentation or concealment must have been material — it must have had a natural tendency to influence the naturalization decision. An honest, immaterial error does not support denaturalization.

If my citizenship is revoked, what happens to my children?

Children who derived citizenship solely through the denaturalized parent can lose that derivative citizenship under former INA §§ 320-321. Children who are U.S. citizens by birth in the United States are not affected.

How Modern Law Group handles denaturalization matters

We approach denaturalization as high-stakes federal litigation, not routine immigration paperwork. Our standard workflow:

1. Obtain and audit the complete A-file and the original naturalization record — N-400, interview notes, and the underlying green card basis — before saying anything to the government.
2. Map every allegation to the materiality standard under Maslenjak and Kungys and identify where the government's proof is thin.
3. Assess whether the matter is civil or criminal and protect the client's rights accordingly — including the right to remain silent in any criminal exposure.
4. Defend the eligibility elements directly for "illegal procurement" claims (residence, physical presence, good moral character) with documentary proof.
5. Evaluate downstream exposure for the whole family — derivative citizenship of children and any reversion-and-removal risk — and plan for it from day one.

If you have received any inquiry, letter, or subpoena touching your naturalization, or you are worried about something in your old application, do not wait and do not answer alone. Schedule a consultation. Citizenship is the strongest status in our system, the law protects it heavily, and these cases are won by preparation — starting before the first word to the government.