The Immigration Pause in Context
The Immigration Act of 1924 cut annual admissions from nearly 900,000 to roughly 150,000, where they remained for 40 years until the Hart-Celler Act of 1965.[5] Immigration continued throughout, including postwar refugee admissions, at roughly one-sixth of pre-restriction levels and one-seventh of current ones.
Average Annual Legal Immigration by Era
Source: Migration Policy Institute, DHS Yearbook of Immigration Statistics[5][6]
What Happened During the Pause
Many forces shaped mid-century prosperity, and the objections section below takes them up. The condition that let the others work was a tight labor market: constrained labor supply raised wages, and slower population growth let construction catch up with demand.
| Indicator | Before Pause | End of Pause | Change |
|---|---|---|---|
| Homeownership rate | 45.6% (1920) | 61.9% (1960) | +16.3 pts |
| Real median family income | $3,300 (1929, adj.) | $6,900 (1965, adj.) | +109% |
| Income inequality (Gini) | 0.49 (1929) | 0.39 (1960) | -20% |
| Union membership | 11.6% (1930) | 28.3% (1954 peak) | +144% |
| Housing units built (1945-1965) | - | ~27 million | Largest boom in U.S. history |
| Poverty rate | ~40% (est. 1930s) | 17.3% (1965) | More than halved |
The Homeownership Transformation
Homeownership rose from under half of American families in 1920 to nearly two-thirds by 1960, a 16.3 point gain that remains the largest sustained increase on record. Three conditions converged: rising wages, 27 million units of construction, and FHA and VA loan programs. Reduced immigration fed the first two.
U.S. Homeownership Rate, 1920-2024
Source: U.S. Census Bureau, Housing Vacancies and Homeownership[1]
The Stall After 1965
After the Hart-Celler Act reopened immigration in 1965, the homeownership rate plateaued. Despite decades of economic growth, federal housing programs, and financial innovation (including 30-year fixed mortgages), the rate has gained only 3.8 percentage points in 60 years (61.9% to 65.7%). Compare that to the 16.3 points gained in the preceding 40 years of reduced immigration.[1] After the 1990 Act more than doubled immigration, the rate has been flat - rising to 66.9% during the housing bubble, then falling back.
The Post-War Building Boom
Between 1945 and 1965 the United States built about 27 million housing units, 1.35 million a year, against immigration averaging 230,000. Levittown alone produced 17,447 homes in four years at prices returning veterans could afford, and the model was replicated nationally. Construction outpaced demand because population growth stayed moderate.
Housing Units Built During the Pause (1945-1965)
Source: Census Bureau, New Residential Construction[3]
The Key Difference: Supply Could Outpace Demand
The U.S. builds roughly 1.4 million units a year today against over 1 million admissions. The postwar boom built 1.35 million a year against 230,000. Comparable capacity, entirely different demand pressure.
Wages, Inequality, and the Middle Class
Tight labor markets gave workers bargaining power. Real median family income more than doubled between 1929 and 1965, the Gini coefficient fell from 0.49 to 0.39, and union membership rose from 11.6% to a peak of 28.3%. Harvard economist George Borjas has documented the mechanism in reverse: immigration expands labor supply and redistributes roughly $402 billion a year from workers to employers. During the pause that transfer ran the other way.
The Borjas Framework
George Borjas's research at Harvard shows that immigration creates winners and losers within the domestic economy.[7] When labor supply expands through immigration:
- •Employers gain - lower labor costs increase profits
- •Workers lose - increased competition suppresses wages
- •Net effect - approximately $402 billion redistributed from workers to employers annually
During the 1924-1965 pause, this redistribution operated in the opposite direction - from employers to workers - enabling the middle-class expansion that defined the era.
Decade-by-Decade: The Pause vs. The Present
The following comparison tracks economic conditions during the pause against the post-1990 period, when immigration more than doubled.
| Decade | Immigration | Wages | Housing | Note |
|---|---|---|---|---|
| 1925-1935 | Low (~25K/yr avg) | Declining (Depression) | Stalled | Immigration near zero; economic collapse dominates |
| 1935-1945 | Low (~50K/yr avg) | Rising (war economy) | War production priority | Labor scarcity drives wage gains; wartime housing limited |
| 1945-1955 | Moderate (~200K/yr) | Rapidly rising | Massive building boom | Levittown model; FHA/VA loans; suburbs expand; tight labor markets |
| 1955-1965 | Moderate (~260K/yr) | Steadily rising | Continued expansion | Middle class peaks; homeownership 62%; real incomes doubling |
| 1991-2000 | High (~900K/yr) | Modest growth | Supply tightening | Immigration triples; wage gains slow; price-to-income begins rising |
| 2010-2024 | Very high (~1.05M/yr) | Stagnant (real) | Severe shortage | Price-to-income reaches 5.1x; 3.8M unit shortage; middle class contracts |
Red rows = post-1990 Immigration Act period. Sources: MPI, Census Bureau, BLS[1][2][5][6]
The COVID Natural Experiment
The 1924-1965 pause is not the only evidence. In 2020-2021, immigration to the United States dropped sharply due to COVID-19 travel restrictions and processing delays. The result was an unplanned, temporary reduction in labor supply - and the labor market response was immediate and measurable.[8]
Workers in sectors with historically high immigrant labor concentration experienced their largest wage gains in decades:
Real Wage Growth by Sector During COVID Immigration Slowdown (2020-2022)
Source: Bureau of Labor Statistics, Current Employment Statistics[8]
The Pattern Repeats
Leisure and hospitality workers saw 28.1% real wage growth during the slowdown, and growth slowed again when immigration resumed in 2022-2023. The same mechanism, in a modern economy.
Addressing Common Objections
“The 1924 Act was racially motivated”
The 1924 quota system was discriminatory by design. Policy 2 proposes a universal reduction across all categories, not country-specific quotas. The lesson drawn here is not the mechanism of restriction but the economic outcome of slower population growth, which benefited Americans of every origin.
“Correlation is not causation - other factors drove middle-class growth”
The New Deal, wartime industrialization, the GI Bill, federal housing and highway programs, and rising unionization all contributed. Each worked better in a tight labor market: housing programs succeeded because construction could outpace demand, and unions gained leverage because employers could not easily replace workers. The pause was a precondition, not the sole cause.
“The economy is different now”
The economy changed; supply and demand did not. The COVID period tested both mechanisms in a modern labor market, and the sectors that gained most were the ones where immigrant labor is most concentrated.
What This Means for Policy
The record across the pause is consistent on every metric: homeownership rose, incomes doubled, inequality fell, and a broad middle class formed. Policy 2 draws on that precedent. Its proposed 90% reduction for 10 years is far shorter than the 40-year pause, but the principle is the same: let housing supply catch up with population, and let tight labor markets restore worker bargaining power.
The Historical Record Is Clear
The United States has run this experiment. From 1924 to 1965, reduced immigration combined with housing construction produced the largest expansion of the middle class in American history. The COVID slowdown confirmed the mechanism still operates. Canada's 2024 immigration cuts, which produced a 6.6% rent decline, provide additional contemporary evidence.[9] The historical and contemporary data indicate that reduced immigration correlates with improved affordability and wage growth. The policy question is how to apply this evidence to current conditions.