For years, Americans struggling to buy a home or afford rent have heard a familiar list of explanations: inflation, interest rates, supply shortages, greedy landlords, greedy builders, greedy everybody.

Now a new Federal Reserve study adds another factor to the conversation — and it lands right in the middle of the most politically explosive issue in America: the unprecedented surge in illegal immigration during the Biden administration.

A working paper from economists at the Federal Reserve Bank of Dallas examined what happened in communities that experienced large increases in unauthorized immigrant workers between 2021 and 2024. The researchers found that the influx increased employment but also created significant pressure on already-tight housing markets.

According to the study, a 1% increase in unauthorized immigrant workers in a local labor market was associated with approximately a 2.2% increase in home prices and a 1.4% increase in rents.

The argument in Washington has often been framed as “jobs versus wages.” But the Fed economists found something more complicated: the labor market absorbed the additional workers without a major measurable hit to average wages, while housing — the place where every family eventually has to live — took the punch.

A new Federal Reserve study reveals Joe Biden’s open border policies caused a surge in home prices and rent across the U.S.

Researchers at the Dallas Fed found the tidal wave of unauthorized immigration during the Biden administration, between 2021 and 2024, increased demand for… pic.twitter.com/zaJQRPr2Jp

— FOX Business (@FoxBusiness) June 29, 2026

It turns out you can add hundreds of thousands of people to communities and still somehow not have a magic button that instantly builds more apartments, houses, schools, and infrastructure.

Funny how reality keeps refusing to follow political talking points.

The researchers described the 2021–2024 period as an “unprecedented boom” in illegal immigration and estimated unauthorized immigration added roughly 7 million people to the U.S. population during those years, based on cited Congressional Budget Office estimates.

Their conclusion was not that immigration alone caused America’s housing crisis. No serious economist would make that claim.

ICYMI: The Impacts of Unauthorized Immigration on U.S. Labor and Housing Markets: New Evidence from Administrative Microdata https://t.co/wZ5ulv1MOe via @DallasFed

— Charles Farthammer (@C_Farthammer) June 22, 2026

But the paper found that in areas where housing supply was already constrained, the additional demand created a measurable shock. If you already have too few homes, bringing in millions of additional people does not exactly make the “for sale” sign cheaper.

The study estimated that unauthorized immigrant worker flows accounted for about 30% of employment growth in the average local labor market between March 2021 and March 2024. It also estimated those flows explained roughly 30% of home price growth and about 20% of rent growth in the average metropolitan area during that period.

Democrats have long argued immigration helps fill labor shortages, especially in industries like construction, agriculture, hospitality, and services. That argument has never been entirely without merit. Businesses do rely on workers, and labor shortages are real.

But Republicans have argued that the scale of illegal immigration matters — and that adding people faster than communities can expand housing and services creates a burden that falls hardest on working-class Americans.

The Fed paper gives ammunition to both sides. It found employment increased “approximately one-for-one” with the influx of unauthorized workers. In plain English: more workers meant more jobs.

But the supply of homes did not keep pace. And housing is where the rubber meets the road.

The housing crisis is not just a statistic. It is a family looking at a mortgage payment and wondering if the American Dream quietly packed up and moved away.

The study also looked at government spending and found areas with larger increases in unauthorized immigrant workers experienced declines in government transfer payments. Researchers suggested that could be connected to stronger employment among working-age immigrants and reduced reliance on some safety-net programs, while noting the finding differs from some previous research.

The biggest takeaway may be that every policy decision has a downstream effect. You can increase the labor supply. You can increase population. You can increase demand. But houses do not appear out of thin air.

Builders have spent years warning that America already faces a shortage of housing, with regulations, material costs, and labor shortages slowing construction. Add a sudden population surge into that equation, and the math gets ugly.

The political class loves arguing about who is morally right. The American family sitting at the kitchen table trying to figure out rent, groceries, insurance, and a mortgage payment is usually more interested in who is actually solving the problem. Because at the end of the day, the border debate isn’t just happening at the border.

It’s happening at the apartment complex. It’s happening at the closing table. And it’s happening every month when the rent goes up.