How Criminal Cases Can Put U.S. Citizenship at Risk: Guilty Pleas, Denaturalization, and Naturalization Fraud
The Trump administration has made denaturalization a stated enforcement priority, and it is moving fast. In a single announcement in March 2026, the Department of Justice secured two denaturalizations and filed a third complaint, all targeting individuals the government says obtained U.S. citizenship through fraud, including by concealing crimes or committing immigration fraud.
The three cases are different in their facts, but together they map the territory. They show the multiple paths by which the government can pursue denaturalization and the multiple points at which exposure arises for non-citizens and naturalized citizens who are, or have been, involved in criminal conduct. For defense counsel, immigration counsel, and anyone who has naturalized and now faces federal scrutiny, the lesson across all three cases is the same: the consequences extend far beyond the criminal case, and the window to address them is earlier than most people think.
Three cases, one announcement.
Volgaev. A native of Ukraine, Volgaev naturalized in 2016. DOJ says he had been smuggling firearm components and committing federal housing benefits fraud since 2011. He was convicted in 2020. On March 23, 2026, the court revoked his citizenship, finding unlawful acts during the good moral character period (described below), false testimony about his criminal background, and willful misrepresentation to procure citizenship.
Cabrera Diaz. A native of Cuba and resident of Hialeah, Cabrera Diaz naturalized in October 2017. In 2019 she pleaded guilty to healthcare fraud conspiracy, admitting to conduct dating back to August 2011, and was sentenced to 29 months and ordered to pay over $6 million in restitution. On March 24, 2026, the court entered a consent judgment revoking her naturalization.
Kassir. A native of Lebanon and Miami resident, Kassir applied for naturalization in 2010 claiming he was living in marital union with a U.S. citizen spouse. DOJ alleges he and his spouse had separated in 2009 and he had relocated to Florida. He pleaded guilty to passport fraud in 2018 and was also convicted of conspiring to commit money laundering. DOJ filed a civil denaturalization complaint on March 17, 2026. The allegations against Kassir have not been adjudicated.
The ways denaturalization exposure arises.
These three cases illustrate that denaturalization risk does not flow from a single source. It can arise in several distinct ways, often simultaneously.
Criminal conduct during the naturalization period. Under the USCIS Policy Manual, most naturalization applicants must demonstrate good moral character during the statutory period preceding the application, generally five years though the period varies by applicant category, continuing through the oath. An applicant who was engaged in criminal conduct during that period may be found to have illegally procured naturalization under 8 U.S.C. § 1451, regardless of whether that conduct was disclosed at the time.
Affirmative misrepresentation during the naturalization process. Naturalization requires sworn statements on the N-400 application, during the naturalization interview, and at the oath ceremony. False statements made under oath at any of those stages can constitute an independent ground for denaturalization based on procurement by concealment or willful misrepresentation, separate from the good moral character analysis.
The reach-back problem in guilty pleas. In federal practice, a guilty plea is not simply an agreement to resolve a criminal charge. It is a sworn adoption of facts that appear in the plea agreement, in any separate factual proffer, and in the defendant's allocution under oath at the change-of-plea hearing. Those facts become part of the permanent record. When a plea's factual basis describes conduct that began during the good moral character period, the defendant has created a record the government can use in a civil proceeding years later. The exposure is not limited to the charge of conviction. It is shaped by every fact formally adopted: the start date of the alleged scheme, the defendant's described role, the scope of the conduct, and the loss amount.
The N-400 Question 15a problem. Form N-400 asks in Question 15a whether the applicant has ever committed, agreed to commit, helped commit, or tried to commit a crime or offense for which they were not arrested. The question reaches conduct that was never charged and never resulted in any contact with law enforcement. For any applicant who was participating in criminal conduct at the time they applied and had not yet been arrested, an answer of "No" would have been false when signed. When a later guilty plea establishes that the conduct was ongoing at the time of the naturalization application, the government may have grounds not only for a good moral character failure but also for a separate theory of procurement by concealment or willful misrepresentation. Two independent grounds can arise from the same set of facts.
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Post-naturalization conduct exposing pre-naturalization fraud.The Kassir case illustrates a different timing problem. The criminal investigation that exposed his naturalization fraud had nothing to do with the original misrepresentation. It arose from a subsequent investigation into counterfeit goods trafficking. Criminal exposure after naturalization can surface and prove fraud that predates it. The two proceedings feed each other.
What defense counsel and immigration counsel must do.
For any client who is a non-citizen or a naturalized citizen, these questions must be answered before the plea is finalized, not after:
Does the proposed factual basis place any admitted conduct within the statutory good moral character period preceding naturalization?
Does the alleged scheme's start date, scope, or duration create denaturalization or removal exposure beyond what the charge alone would suggest?
Did the client answer Question 15a on Form N-400, and if so, was that answer accurate given the conduct now being admitted?
Have criminal defense counsel and immigration counsel coordinated, not at sentencing, but during plea negotiations, before anything is signed or stated on the record.
The factual basis deserves the same scrutiny as the charge itself. Once the client allocutes under oath, the record is fixed. The government can use it on its own timeline, in a separate proceeding, under a different burden of proof than the one that governed the criminal case.
The bottom line.
These three cases are not outliers. They are the leading edge of a deliberate enforcement initiative. The government is systematically identifying cases where citizenship was procured while criminal conduct was ongoing, where naturalization applications contained false statements, or where guilty pleas have created a usable factual record for civil proceedings. Removal exposure under 8 U.S.C. § 1227 and denaturalization exposure under 8 U.S.C. § 1451 operate on different legal standards, but both can flow from the same criminal record, and neither ends at sentencing.
For non-citizens and naturalized citizens facing federal scrutiny, and for the counsel advising them, the exposure in 2026 extends well beyond the criminal case. Understanding where it comes from, and addressing it before the plea, is no longer optional.
Frequently Asked Questions
Can a guilty plea result in loss of U.S. citizenship? Yes. If a defendant's plea admissions establish that unlawful conduct occurred during the statutory period in which they were required to demonstrate good moral character for naturalization, the government may bring a civil action to revoke citizenship under 8 U.S.C. § 1451. The criminal case and the denaturalization proceeding are separate. The government can bring the civil action after the criminal case closes.
What is the good moral character period for naturalization? For most applicants, the statutory period is five years preceding the naturalization application, continuing through the oath of citizenship. For spouses of U.S. citizens applying under the three-year rule, the period is three years. The period varies by applicant category under the USCIS Policy Manual.
What is Form N-400 Question 15a and why does it matter? Question 15a on the N-400 Application for Naturalization asks whether the applicant has ever committed, agreed to commit, helped commit, or tried to commit a crime or offense for which they were not arrested. If an applicant was engaged in criminal conduct at the time of their application and an answer of "No" was given, that answer may constitute a false statement under oath, which is an independent ground for denaturalization separate from the good moral character failure.
What is the difference between deportation and denaturalization? Deportation, formally called removal, applies to non-citizens and is governed primarily by 8 U.S.C. § 1227. Denaturalization is the civil revocation of U.S. citizenship and is governed by 8 U.S.C. § 1451. They are separate proceedings with different legal standards, burdens of proof, and consequences. A naturalized citizen who is denaturalized may face subsequent removal proceedings.
When should a criminal defense attorney involve immigration counsel? Before the plea is entered. Once a defendant allocutes under oath and the court accepts the factual basis, the record is fixed. The time to assess and where possible limit the immigration and citizenship consequences of plea facts is during plea negotiations, before anything is signed or stated on the record.
Brooke Watson is a Partner at Dynamis LLP, a former federal prosecutor, and former Deputy Criminal Chief of the U.S. Attorney's Office for the Southern District of Florida. She advises clients on white-collar defense, government investigations, and complex litigation. To speak with Dynamis LLP about a federal criminal matter, visit dynamisllp.com
This post is intended for informational purposes only and does not constitute legal advice. Readers should consult qualified counsel regarding their specific circumstances.