MPI: From Last Resort to Intimidating Enforcement Tool: Denaturalization in the Trump Era

Of note:

The Trump administration has embarked on a robust campaign to strip a record number of immigrants of their U.S. citizenship, shifting resources within the government to achieve the quotas it has imposed on federal prosecutors. While the process of denaturalization is as old as naturalization itself, albeit historically rarely invoked, the administration is seeking to use its authority in greater and different ways. Once reserved largely for Nazis, communists, and security threats, denaturalization now could be used by the Trump administration for a broad set of criminal acts and cases deemed “sufficiently important to pursue,” which some fear could mean naturalized citizens accused of engaging in disfavored speech or political activity.

The administration’s ability to meet its ambitions is uncertain, given the legal protections related to citizenship that have evolved over the years. When Congress brought naturalization under exclusive federal authority in 1906, it saw denaturalization as a measure of last resort. Although hundreds of immigrants were stripped of their U.S. citizenship annually on average in subsequent decades—many of them perceived enemies of the state, anarchists, or nationals of wartime adversaries—the Supreme Court sharply curtailed use of denaturalization after 1967. Between 1990 and 2017, an average of 11 denaturalization cases were filed per year.

The Trump administration tried to buck the trend during its first term, setting a lofty goal of 1,600 denaturalization referrals for the long-running Operation Janus, which was investigating fingerprint records that had not been digitized. But its results fell far short; the average of about 25 civil cases filed per year was a significant increase from the past, though far below rates of the pre-1967 era and well below the goal. (Given that denaturalization is a lengthy and deliberative process, it is unclear how many of these cases ended in individuals being stripped of U.S. citizenship). So far during the second Trump term, the administration had reportedly identified 384 potential denaturalization cases as of April 2026. As of this writing, it had filed charges against at least 39 individuals in 2026.

Whether the latest campaign leads to denaturalization numbers on par with those of a century ago or not, it will likely have the effect of stoking fear among immigrants—even those who had assumed that becoming a U.S. citizen was the final and irreversible act of integration into U.S. society. The administration’s rhetoric and actions have injected doubt in that long-held assumption for some, potentially permanently altering perceptions about the value of acquiring U.S. citizenship.

Source: From Last Resort to Intimidating Enforcement Tool: Denaturalization in the Trump Era