A naturalized US citizen cannot be deported directly, but the answer to whether a naturalized US citizen can be deported is not a flat no. The government must first go to federal court and convince a judge to revoke the person’s citizenship in a proceeding called denaturalization. Only after that order is entered does the former citizen become a non-citizen who can be placed in removal proceedings. Denaturalization is hard to win and historically rare, though the Department of Justice has recently made it a top enforcement priority.
The Two-Step Path From Citizenship to Removal
Deportation of a naturalized citizen is never a single action. It requires two separate legal proceedings, in this order.
First, the government files a civil denaturalization lawsuit. US Citizenship and Immigration Services refers the case to the US Attorney’s Office, which then sues in the federal district court where the naturalized citizen lives.1USCIS. Chapter 1 – Purpose and Background This is not a criminal prosecution. It is a civil complaint asking the court to cancel the naturalization order. The citizen must receive at least 60 days’ personal notice, and has the right to respond, present evidence, and go to trial.2Office of the Law Revision Counsel. 8 USC 1451 – Revocation of Naturalization
The government’s burden is heavy. It must produce “clear, convincing, and unequivocal evidence” that leaves no room for doubt about the grounds for revocation.1USCIS. Chapter 1 – Purpose and Background That is a much higher bar than the preponderance standard used in ordinary civil cases.
One detail catches people off guard. There is no statute of limitations for civil denaturalization. The government can bring a case decades after the person naturalized.
Second, if the court revokes citizenship, the government can issue a Notice to Appear, the charging document that opens removal proceedings in immigration court. At that point the former citizen faces an immigration judge as a non-citizen, and every deportation ground that applies to non-citizens now applies to them.
Grounds That Can Cost You Citizenship
Federal law recognizes two main grounds for civil denaturalization: citizenship that was “illegally procured,” meaning the person did not actually qualify, and citizenship “procured by concealment of a material fact or by willful misrepresentation,” meaning fraud.2Office of the Law Revision Counsel. 8 USC 1451 – Revocation of Naturalization A narrow third category covers certain post-naturalization conduct.
Fraud or Misrepresentation
Fraud is the ground the government uses most. It covers deliberate lies on the naturalization application or during the citizenship interview. But not every misstatement qualifies. The Supreme Court held in Kungys v. United States that the government must prove the person made a willful misrepresentation, that the fact concealed was material, and that citizenship actually resulted from the lie.3Justia Law. Kungys v. United States, 485 US 759 A fact is material only if it was “predictably capable of affecting” the decision on whether to grant citizenship. Getting an arrival date wrong by a few days is not material. Concealing a prior deportation order under a different name is.
The misrepresentations that typically trigger denaturalization include hiding a serious criminal record, concealing a previous removal, using a false identity, or covering up a sham marriage that was the basis for a green card. Concealing membership in an organization that would have disqualified you from citizenship also counts. Federal law bars naturalization for members of the Communist Party, other totalitarian parties, and organizations that advocate overthrowing the US government.4GovInfo. 8 USC 1424 – Prohibition Upon Naturalization of Persons Opposed to Government or Law
Illegal Procurement
Illegal procurement is different. It means you did not meet the legal requirements when citizenship was granted, whether or not you lied about anything. The naturalization simply should not have been approved, and when the government proves this, the citizenship is treated as void from the start.
The most basic requirement is lawful admission as a permanent resident.2Office of the Law Revision Counsel. 8 USC 1451 – Revocation of Naturalization If the underlying green card turns out to be invalid, the citizenship built on top of it was illegally procured. Applicants must also have lived continuously in the United States for at least five years as a permanent resident and been physically present for at least half of that time before filing.5GovInfo. 8 USC 1427 – Requirements of Naturalization Falling short is grounds for revocation even if USCIS missed it at the time.
Good moral character is the trickiest eligibility requirement. Certain conduct during the five-year statutory period before the application automatically disqualifies an applicant, including convictions for crimes involving moral turpitude, most controlled substance violations, or spending 180 or more days in jail. Immigration officials are not limited to that window. They can look at conduct from any point in your life if it suggests that reform during the statutory period was not genuine.6eCFR. 8 CFR 316.10 – Good Moral Character
Post-Naturalization Conduct
A few narrow triggers reach conduct that happens after you become a citizen. Joining a prohibited organization such as the Communist Party within five years of naturalization creates a legal presumption that you were not sincerely committed to the Constitution when you took the oath. A contempt of Congress conviction for refusing to testify before a committee investigating subversive activities, if that refusal occurs within ten years of naturalization, is also grounds for revocation.2Office of the Law Revision Counsel. 8 USC 1451 – Revocation of Naturalization For people who naturalized through military service, separation under other than honorable conditions before completing five years of honorable service can undo that citizenship.7Office of the Law Revision Counsel. 8 USC 1439 – Naturalization Through Service in the Armed Forces
What Is Not a Ground
Living abroad is not grounds for denaturalization. A provision allowing that was part of the law for decades, but Congress repealed it in 1994.2Office of the Law Revision Counsel. 8 USC 1451 – Revocation of Naturalization Naturalized citizens today have the same right to live outside the United States as anyone born here.
The Separate Criminal Route
Alongside the civil process, there is a criminal statute. Knowingly obtaining citizenship through fraud is punishable by up to 10 years in prison for a first or second offense, up to 20 years if the fraud was connected to drug trafficking, and up to 25 years if it was connected to international terrorism.8Office of the Law Revision Counsel. 18 USC 1425 – Procurement of Citizenship or Naturalization Unlawfully A conviction under this statute triggers automatic loss of citizenship on top of any prison sentence.
The stakes and rules differ from the civil path. The government must prove guilt beyond a reasonable doubt, the highest standard in American law. In Maslenjak v. United States, the Supreme Court held that when the underlying illegal act is a false statement, the government must show the lie actually influenced the decision to grant citizenship.9Supreme Court of the United States. Maslenjak v. United States, 582 US 335 Unlike civil denaturalization, criminal prosecution has a 10-year statute of limitations running from the date the fraud was committed.10Office of the Law Revision Counsel. 18 USC 3291 – Nationality, Citizenship and Passports
What Happens if Citizenship Is Revoked
A denaturalization order reaches back to the original date of naturalization. The revocation is treated as if the citizenship never existed, and the Certificate of Naturalization is canceled.11USCIS. Chapter 3 – Effects of Revocation of Naturalization You revert to whatever immigration status you held before you became a citizen.
What that status looks like varies. If you had a legitimately obtained green card, you may return to lawful permanent resident status. If your green card was itself obtained through fraud or error, you could find yourself with no lawful status at all. And if the criminal conduct that led to denaturalization also makes you deportable under immigration law, you are now exposed to removal proceedings as a non-citizen. This is the second step that turns a denaturalization case into a deportation case.
Effect on Children and Spouses
Denaturalization can reach beyond the person who lost citizenship. The consequences depend on why citizenship was revoked.
If the revocation was for fraud or misrepresentation, any family member who derived citizenship through that person also loses it, whether they live in the United States or abroad.2Office of the Law Revision Counsel. 8 USC 1451 – Revocation of Naturalization The derivative citizenship was built on a fraudulent foundation.
If the revocation was for illegal procurement, children who derived citizenship through the parent keep their own citizenship.11USCIS. Chapter 3 – Effects of Revocation of Naturalization For revocations based on post-naturalization conduct, family members who derived citizenship lose it only if they are living outside the United States at the time of revocation.2Office of the Law Revision Counsel. 8 USC 1451 – Revocation of Naturalization Those inside the country keep it.
Why the Risk Is Higher Now
Denaturalization has historically been rare, but enforcement is expanding. The Department of Justice created a section specifically dedicated to denaturalization cases, moving these proceedings out of the hands of individual US Attorney offices.12United States Department of Justice. The Department of Justice Creates Section Dedicated to Denaturalization Cases In mid-2025, the DOJ’s Civil Division named denaturalization a top enforcement priority and broadened the categories of cases it will pursue, including fraud against government benefit programs and national security violations.
Technology is a large part of the shift. Through Operation Janus, the government digitized hundreds of thousands of old paper fingerprint cards and matched them against modern biometric records. That comparison flagged over 22,000 cases where the same person had used multiple identities to obtain immigration benefits, and identified at least 858 people who received citizenship despite having final deportation orders under a different name.13USCIS. Operation Janus As more historical records are digitized, the pool of potential referrals continues to grow. For a naturalized citizen with unresolved issues in their immigration history, the practical risk is higher now than at any point in the past several decades.