Beneath the usual headlines about unemployment rates, interest rates and monthly payroll numbers, something potentially much more important has been happening in the American labour market. After years in which employment growth among the foreign-born population frequently overshadowed employment growth among native-born Americans, the pattern has been changing. Native-born employment has been strengthening while foreign-born employment has declined.
That deserves attention because it cuts directly into one of the most contentious economic questions of the Trump era: what happens to American workers when the supply of immigrant labour is reduced?
The numbers come from the US Bureau of Labor Statistics Current Population Survey, the enormous monthly household survey used to calculate unemployment and other measures of labour-market activity. The BLS divides the population into native-born and foreign-born categories and publishes employment estimates for both.
An important qualification should be made immediately. "Foreign-born" does not mean "illegal immigrant," nor does it even mean "non-citizen." The BLS defines the foreign-born as people residing in the United States who were not US citizens at birth. That category therefore includes naturalised American citizens as well as legal permanent residents, temporary migrants and others. Native-born, correspondingly, is not simply a synonym for "white Americans" or any particular racial group.
Nevertheless, the employment distinction is revealing. For much of the post-pandemic period, one of the striking features of American employment growth was the strength of foreign-born employment. Critics of the Biden administration repeatedly pointed to labour statistics showing that the foreign-born workforce had expanded strongly while employment among native-born Americans looked much less impressive. Whatever interpretation one placed upon those figures, they complicated political claims about an employment boom benefiting ordinary Americans.
Now the direction has changed. The BLS series show native-born employment rising from its recent lows while foreign-born employment has retreated from the peaks reached during the previous immigration surge. This is occurring as the Trump administration has sharply tightened immigration enforcement and the inflow of new foreign workers has diminished.
That does not prove a simple one-for-one substitution story in which an immigrant loses a job on Monday and a native-born American occupies the same desk on Tuesday. Labour markets do not work that neatly.
Some foreign-born workers may leave the country. Others may leave the labour force. Reduced immigration itself means fewer newly arrived workers appearing in the employment statistics. Changes in the composition and size of the foreign-born population can therefore reduce foreign-born employment without anybody actually being dismissed.
There is also an important technical qualification. The monthly BLS native-born and foreign-born employment series are not seasonally adjusted. One should consequently be wary of building sweeping conclusions around movements from one month to the next.
But neither qualification makes the broader development uninteresting. For years, advocates of high immigration have argued that immigrant workers do not meaningfully displace native workers because immigrants expand the economy as both producers and consumers. They rent houses, purchase food, buy cars, start businesses and create additional demand. On this account, treating the labour market as a fixed number of jobs divided among competing workers commits the so-called lump-of-labour fallacy.
There is truth in this. An economy is not a cake of fixed dimensions. But neither does it follow that labour supply is irrelevant to wages and employment opportunities. If the supply of workers capable of performing particular jobs increases rapidly, employers possess a larger pool from which to recruit. If that supply contracts, employers must compete more intensely for the workers who remain.
This is elementary economics when applied to almost every other market. Increase supply, other things being equal, and downward pressure is placed upon price. Restrict supply and upward pressure is placed upon price. Labour markets are vastly more complicated than textbook commodity markets, but it would be extraordinary if labour alone were completely immune from supply and demand.
Immigration can therefore produce overall economic gains while simultaneously producing distributional consequences. Employers may benefit from a larger labour pool. Consumers may benefit from cheaper services. Owners of capital and property may gain from population growth. Immigrants themselves may experience enormous improvements in income.
Yet particular groups of existing workers can still face increased competition. That is especially relevant toward the lower end of the labour market, where workers possess less bargaining power and where employers can more easily substitute one employee for another. An abundant supply of workers willing to accept relatively low wages reduces the pressure upon businesses to improve pay and conditions.
Reduce that supply and something has to give. Employers can raise wages. They can improve conditions. They can invest in labour-saving technology. They can train people previously regarded as unsuitable. They can recruit workers who have been sitting outside the labour force. Some marginal businesses may discover that their business models were viable only because unusually cheap labour was continually available. From the standpoint of national policy, that last possibility should not automatically be regarded as a disaster.
For decades Western economies have increasingly treated labour shortages as problems to be solved through immigration. Employers announce that they cannot find workers, governments expand visas, and the additional workers relieve the immediate shortage.
But what does "shortage" actually mean? Frequently it means that employers cannot find enough people possessing the desired qualifications who are willing to work under the wages and conditions currently offered. In almost any other market, shortage produces a price response. If there is a shortage of copper, copper becomes more expensive. If there is a shortage of housing, rents increase. Yet when businesses experience a shortage of labour, governments are frequently asked to increase supply before wages can perform the same adjustment.
The immigration tap becomes a mechanism for preventing labour scarcity from producing its natural consequences. This is why the emerging American experiment is worth watching for Aussies.
If tighter immigration produces sustained growth in native-born employment, rising wages at the lower end and increased labour-force participation among Americans previously marginalised from employment, one of the strongest arguments for continually expanding labour migration will have been weakened.
There are Americans whom employers have often found inconvenient to employ: people without university degrees, workers requiring training, people with imperfect employment histories, older workers, people living outside major metropolitan centres and workers demanding wages sufficient to support families.
A tight labour market changes the calculation. The supposedly unemployable worker can suddenly become employable when the alternative is leaving the position vacant.
There may also be a productivity effect. Cheap and abundant labour can reduce the incentive to automate. Expensive labour encourages businesses to find ways of producing more with fewer workers. Historically, labour scarcity has often stimulated technological innovation.
The United States therefore provides an unusually important test case. If immigration falls substantially while businesses continue functioning, wages adjust and native-born workers move into employment, economists will have to examine whether the previous dependence upon ever-increasing foreign labour was as economically necessary as its advocates maintained.
The evidence is not yet sufficient to declare that experiment completed. America's latest employment report actually shows a generally weak labour market. July 2026 saw nonfarm payroll employment fall by 23,000, while labour-force participation declined. It would consequently be misleading to describe the United States as experiencing an uncomplicated employment boom.
But that makes the changing composition of employment more interesting rather than less. The question is not merely how many jobs America creates. It is who gets them. There is an enormous difference between an economy generating employment while continually importing additional workers and one in which employers increasingly recruit from the population already living in the country.
The distinction also goes to the heart of what economic policy is supposed to accomplish. Maximising aggregate GDP is not necessarily identical to maximising the welfare of existing citizens. A country can increase total output simply by increasing its population. What matters to individuals is productivity, real wages, housing costs, employment opportunities and living standards per person.
Immigration should therefore be judged like any other economic policy: by identifying winners and losers rather than assuming that an increase in aggregate output settles the argument, as is done in the Australian debate.
For the moment, caution is appropriate. The native-born and foreign-born employment series are volatile, they are derived from a household survey, and they are not seasonally adjusted. Several more months of data will tell us much more than any single observation.
But something worth watching is occurring underneath America's employment headlines. For years, the American economy added millions of foreign-born workers while critics asked why employment among native-born Americans was not performing equally strongly. Immigration has now been sharply curtailed, and the employment pattern has begun moving in the opposite direction.
It may turn out to be temporary. It may partly reflect foreign-born workers leaving the country rather than native-born workers replacing them. It may also be obscured by the broader slowdown now appearing in the American labour market.
Or it may be the beginning of something considerably more consequential: a labour market being forced once again to look inward for its workers. If that continues, the great immigration debate will acquire something it has too often lacked: a real-world experiment. Instead of asking economists to model what might happen if employers could no longer rely upon continually expanding supplies of foreign labour, America may be starting to show us, a lesson immigration-mad Australia needs to learn.