The Trump administration has launched what it describes as the largest denaturalisation effort in modern US history, filing complaints to revoke the citizenship of 40 naturalised Americans on charges ranging from immigration fraud and concealed criminal conduct to espionage and acting as an agent of a foreign government. The Justice Department confirmed that the complaints were filed in federal courts across the United States between 21 August and 2 October 2025.

Scale and Scope of the Drive

The 40 defendants originate from a wide range of countries. Allegations include immigration and identity fraud, fraudulent marriages, concealed criminal records, tax fraud, and offences involving minors. Officials described the volume of complaints filed within a single period as unprecedented under the current administration.

Attorney General Todd Blanche said: 'Today's announcement marks the largest denaturalization effort in modern history. From an individual convicted of espionage to others convicted of sexual offenses against minors, these defendants concealed critical facts from the U.S. government and represent serious criminal offenders. Under President Trump's leadership, the Department of Justice will continue to employ the denaturalization process to maintain our national security and protect the American people.'

The Espionage Case at the Centre

Among the highest-profile targets is Jinchao Wei, a China-born former US Navy sailor convicted of espionage-related offences. According to the department, Wei enlisted in the Navy in 2021 and by February 2022 had allegedly begun conspiring to sell military secrets to China. He obtained US citizenship in May 2022 under provisions designed to fast-track naturalisation for those serving honourably in the armed forces.

Wei was convicted in August 2025 of conspiracy to commit espionage, espionage, and unlawful export of technical data related to defence articles. He was sentenced to 200 months in prison and discharged from the Navy.

The department also cited a separate individual referred to as Li, who allegedly worked at the direction of officers of China's Ministry of State Security to obtain information about Chinese dissidents, pro-democracy advocates, Falun Gong members, and US-based organisations.

What Officials Said

Assistant Attorney General Brett A. Shumate of the Justice Department's Civil Division stated: 'Every single one of these individuals lied their way into US citizenship. This administration will continue to pursue the largest denaturalization effort in department history to restore trust and integrity in U.S. citizenship. Our message is clear: the United States will not tolerate deception in the naturalization process.'

Broader Context and What It Means

Denaturalisation — the legal process of revoking citizenship already granted — has historically been rare in the United States, reserved for cases of war crimes, concealed Nazi activity, or serious fraud. The Trump administration's use of the mechanism at this scale marks a sharp escalation from previous administrations, which had pursued far fewer such proceedings annually.

Critics argue that the breadth of the campaign — covering crimes as varied as espionage and minor fraud — risks setting a precedent that could be applied more expansively over time. Civil liberties groups have previously warned that denaturalisation proceedings put the burden on defendants to disprove government allegations, often years after citizenship was granted.

This comes amid a broader immigration enforcement push by the administration that has included expedited deportations, expanded border measures, and restrictions on asylum. The denaturalisation drive adds a new dimension: targeting those already inside the legal citizenship framework.

How federal courts rule on these 40 complaints will likely set important legal benchmarks for future denaturalisation efforts.