U.S. Launches Major Denaturalization Effort Targeting Naturalized Citizens

U.S. Launches Major Denaturalization Effort Targeting Naturalized Citizens

The Trump administration has launched a major effort to revoke the U.S. citizenship of naturalized Americans who the government says obtained citizenship through fraud, false information, or by hiding important facts.

The Justice Department recently announced 40 new denaturalization cases, calling it the largest such effort in modern U.S. history.

But this does not mean the government can simply cancel someone's citizenship.

For most naturalized Americans, citizenship cannot be taken away just because they later commit a crime. The government generally has to prove that there was a serious problem with how the person originally obtained citizenship.

What is denaturalization?

Denaturalization is the legal process of taking away U.S. citizenship from someone who became a citizen through naturalization.

Under U.S. immigration law, the government may ask a federal court to revoke citizenship if it believes the person:

• Obtained citizenship illegally

• Hid important information during the immigration or naturalization process

• Intentionally provided false information that helped them qualify for citizenship

USCIS can investigate suspected fraud, but in civil denaturalization cases, the Justice Department generally must take the case to federal court.

A federal judge then decides whether the government has presented enough evidence to revoke the person's citizenship.

Why are these 40 people being targeted?

According to the Justice Department, the 40 defendants range in age from 26 to 76 and originally came from 20 different countries.

The allegations are very different from case to case.

They include:

• Immigration and identity fraud

• Fraudulent marriages

• Hidden deportation orders

• Concealed criminal histories

• Financial crimes

• Espionage

• Voluntary manslaughter

• Crimes involving minors

The government's main argument is that these individuals allegedly lied, concealed important information, or engaged in conduct that would have affected their eligibility for citizenship.

Some major cases

One case involves Jinchao Wei, a Chinese-born former U.S. Navy sailor.

Wei was convicted in 2025 on espionage-related charges involving the sale of sensitive U.S. military information to China. The government says his conspiracy began before he became a U.S. citizen in May 2022 and that he concealed the conduct during the naturalization process. He was later sentenced to 200 months in prison.

Another case involves Ping Li, who pleaded guilty in 2024 to acting as an agent of the Chinese government without notifying the U.S. attorney general. Authorities say he provided information about Chinese dissidents, pro-democracy activists, Falun Gong members, and organizations in the United States.

The government is also seeking to revoke the citizenship of Iain Lumsden, a British-born man who pleaded guilty to a federal child pornography offense. Prosecutors argue that some of his conduct occurred before he became a citizen and that he made false statements during the naturalization process.

Other cases involve allegations of fraudulent H-1B petitions, multiple identities, fake immigration documents, fraudulent marriages, and concealed criminal activity.

There are important legal limits

The federal government does not have unlimited power to revoke citizenship.

The Supreme Court made this clear in the 2017 case Maslenjak v. United States.

The Court rejected the idea that just any false statement made during the naturalization process is automatically enough to justify taking away citizenship.

Generally, the false statement or concealed information must have had a meaningful connection to obtaining citizenship.

In simple terms, the government has to show more than:

"You made a false statement."

It must establish the legal grounds showing why that false statement, concealment, or other violation affected the person's eligibility for citizenship.

Why is this becoming a major issue now?

Denaturalization cases were historically uncommon.

According to the Brennan Center for Justice, the federal government filed an average of about 11 denaturalization cases per year between 1990 and 2017.

During President Trump's first term, that increased to roughly 25 cases per year.

The numbers have now increased dramatically.

At least 105 denaturalization lawsuits were reportedly filed during the first seven months of 2026.

For comparison, TRAC recorded roughly 125 cases during the entire period from 2008 through 2025.

The Justice Department then announced another 40 cases between August 21 and October 2.

This follows a June 2025 Justice Department directive telling Civil Division attorneys to prioritize denaturalization cases when they are supported by law and evidence.

What does this mean for naturalized Americans?

This is the most important point to understand:

Being a naturalized citizen does not mean the government can simply take away your citizenship whenever it wants.

These cases focus primarily on allegations that citizenship itself was obtained illegally or through material fraud, concealment, or misrepresentation.

The government must still follow the legal process, present evidence, and meet the required legal standard.

And ultimately, in civil denaturalization proceedings, a federal judge decides whether citizenship should be revoked.

What is changing is not necessarily the basic law.

What has changed dramatically is how aggressively the federal government is using it.

With more than 100 cases already filed in 2026 and dozens more being announced, denaturalization is becoming a much more visible part of the Trump administration's immigration enforcement strategy.