The foreign-born population in the United States fell by 2.9 million between January 2025 and July 2026. That's not a projection. That's not a goal. That's a number from the Current Population Survey, analyzed by the Center for Immigration Studies and published this week.
It's the first decline since the 1930s.
Of that 2.9 million drop, an estimated 2.3 million were illegal aliens. The total illegal alien population fell from 15.8 million in January 2025 to 13.5 million by July 2026. That's a reduction large enough to be its own mid-sized American city — gone from the rolls in eighteen months.
The context makes the number even sharper. During the COVID-era Biden years, the foreign-born population surged by 8.3 million. That was the wave. Open borders, suspended enforcement, an entire federal apparatus that treated illegal entry as a housing problem instead of a law enforcement one. The 2.9 million decline isn't happening in a vacuum. It's a direct reversal of a policy choice that added a population the size of Virginia to the country in four years.
The Center for Immigration Studies broke down who left. About 44 percent of the decline was among workers. The remainder included elderly residents, children, and non-workers. That worker number matters because it puts a hole in the argument that mass enforcement would collapse the labor market. If 44 percent of the people who left were working, and the economy hasn't seized up, maybe the "who will pick the crops" line was always more political than economic.
Vice President JD Vance was direct about the results. "We sealed the border and are getting illegal immigrants the hell out," he said. Not a lot of ambiguity there.
Stephen Miller referenced the data as evidence of the "first sustained negative migration in 100 years." That framing — sustained and negative — is the part that matters. This isn't a one-month blip caused by a hurricane or a pandemic disruption. It's a trend line moving in one direction over eighteen months because of deliberate enforcement pressure and policy changes at the border.
Remember the predictions. Every cable news panel in 2024 and early 2025 featured someone explaining, usually with great condescension, that you simply cannot deport millions of people. It's logistically impossible. It's economically catastrophic. It's morally unconscionable. The number was treated as an abstraction designed to make enforcement sound absurd.
2.9 million. Not through some massive roundup operation that the critics warned about. Through a combination of border enforcement, interior pressure, and something the experts never wanted to acknowledge — self-deportation. When the incentive structure changes, behavior changes. When sanctuary cities stop being sanctuaries and federal agencies start acting like federal agencies, people make decisions.
Townhall's Scott McClallen reported on the data, and the numbers from the Center for Immigration Studies are straightforward. The Current Population Survey tracks naturalized citizens, lawful permanent residents, temporary visitors, and undocumented immigrants. The decline showed up across the board, but the sharpest drop was among illegal aliens — the exact population that the previous administration insisted was too embedded to move.
The 8.3 million surge under Biden. The 2.9 million reversal under Trump. One of those numbers got treated as inevitable. The other got called impossible.
Turns out the impossible number just needed someone willing to enforce the law.