Yes, in the short run for specific low-wage sectors; no, it does not create permanent economy-wide shortages. Labor markets clear via wages, participation, capital, and composition changes. Abrupt zero net immigration tightens supply where immigrants are concentrated, raising pay and inducing substitution—exactly as basic supply-demand predicts. Claims of inevitable collapse ignore adjustment and history.
Economics, Not Slogans
•Supply shock: Immigrants (especially low-skilled) expand labor supply in agriculture, construction, meatpacking, hospitality, eldercare, and some services. Cutting inflows reduces that growth. With sticky wages or regulations, vacancies rise temporarily. Businesses that treated cheap labor as a fixed input complain of "shortages."
•Price adjustment: Higher wages draw in natives, raise hours, delay retirement, and pull people from disability/non-participation. They also accelerate automation (robots in fields/warehouses, self-checkout, prefab construction) and offshoring/import of goods. Capital substitutes for labor when labor gets expensive. This is textbook, observed repeatedly.
•Not zero-sum magic: Immigrants also demand goods/services, so they create some jobs. Net effect on native wages is negative for substitutes (prior low-skilled workers, including earlier immigrants and Black Americans) and mixed/positive for complements (see Borjas, National Academies of Sciences 2017, and wage studies around the 1980 Mariel Boatlift or 1920s restrictions). Aggregate GDP rises with more people; per-capita and native low-skill wages often do not.
•Demographics matter but are not destiny: Below-replacement fertility + aging raises the old-age dependency ratio. Immigration of working-age people slows this, but low-skilled inflows add fiscal costs (education, welfare, remittances) that offset much of the benefit, and immigrants themselves age. Japan/South Korea run very low immigration, high automation, and rising senior participation; they face tightness, not paralysis. Gulf states use rotation of guest workers without citizenship paths.
Evidence Over Narrative
•US 1920s cutoffs: National-origins quotas sharply reduced immigration. Native wages and manufacturing employment rose; Black workers gained in northern labor markets. No multi-decade "shortage" crisis—mechanization and internal migration filled gaps.
•Sector patterns today: USDA and DOL data show heavy foreign-born shares in farm labor and construction. When enforcement rises (e.g., certain E-Verify expansions or post-2008 slowdowns), wages in those niches increase and growers adopt more machines or switch crops. Tech "shortages" are often wage and H-1B preference stories—firms could train or pay more. Healthcare faces genuine credential and aging issues that immigration only partially papers over.
•Recent natural experiments: COVID border changes + stimulus produced tight markets and rapid wage gains at the bottom (Atlanta Fed wage tracker). Conversely, large unauthorized surges correlate with flatter wage growth for dropouts and high school graduates. Studies finding "no effect" often use spatial methods that understate national labor-market competition (Borjas critique).
•Europe: Post-2015 inflows and guest-worker history show similar sector concentration and native displacement in low-skill work, with fiscal strains in high-welfare states. Countries that kept tighter controls (Denmark's shifts, Switzerland quotas) did not suffer unique collapses.
Practical Nuance
"Stopping immigration" is vague—zero legal + zero illegal, skilled only, or net-zero? Sudden halts in farm or care work cause acute pain; phased reductions with wage flexibility do not. Illegal immigration specifically bypasses selection and enforcement, amplifying low-skill supply. High-skilled inflows (selective points systems) have different elasticity and fiscal profiles.
Native labor force participation, especially prime-age male, has slack in the US (BLS, Saez/Zucman-type analyses of disability and opioids). Raising it, cutting barriers to work, and reforming education/training address "shortages" without open borders. Employers prefer the political solution of imported labor over higher pay or process changes—hence the lobbying.
For data, see Borjas We Wanted Workers, NAS The Economic and Fiscal Consequences of Immigration (2017), peri- and card-style papers (and their critics), BLS foreign-born shares, and historical series from the Immigration Commission and Census. Markets adapt; "labor shortage" is frequently a demand for subsidized wages.