Full Breakdown
Foreign-Born Population Shrinks by 2.9 Million Amid Trump-Era Immigration Enforcement
9/5/2026, 12:31:45 AM
Decline in the Foreign-Born Population
In just over a year, the United States’ foreign-born population fell by an estimated 2.9 million people, according to figures from the Census Bureau’s Current Population Survey (CPS) analyzed by the Center for Immigration Studies (CIS). The decline includes naturalized citizens, lawful permanent residents, long-term temporary visitors, and illegal immigrants. CIS estimates that the illegal-immigrant segment dropped by roughly 2.3 million, falling from about 15.8 million in January 2025 to 13.5 million by July 2026. The net change reflects a combination of new arrivals, deportations, voluntary emigration, legalizations, and natural mortality.
How the Numbers Were Derived
CIS based its assessment on the monthly CPS household survey, which records self-reported immigration status. The agency notes that immigration inflow was effectively zero percent during the most recent year—the first such occurrence since the 1930s. About 44 percent of those who left were working-age adults; the remainder were non-working family members and children. CIS characterizes the overall decline as “unprecedented” in the survey’s history.
Official Assessment by the Center for Immigration Studies
CIS concludes that the sharp drop in the foreign-born count is driven primarily by a dramatic reduction in illegal-immigrant numbers.
Opposition from Pro-Immigrant Advocates
Pro-illegal-immigrant activists dispute CIS’s interpretation, arguing that the CPS does not directly measure the actual size of the foreign-born population. They claim the Center is extrapolating beyond what the survey can reliably capture, suggesting the reported decline may be overstated.
Potential Implications
If the decline reflects a genuine reduction in illegal immigration, it could signal the effectiveness of enforcement policies implemented after President Donald Trump assumed office in January 2025. Conversely, if the figures are inflated by methodological limitations, policymakers may lack accurate data for future immigration decisions. The debate underscores the need for more precise measurement tools to assess demographic shifts tied to immigration policy.
