Why a Polarised Debate Keeps Us from Seeing Immigration Clearly

Over the past few decades, the share of migrants in many high-income countries has risen sharply. In some places, it has reached levels not seen for generations. In the United States, the proportion of migrants in the population is now close to where it stood in the early 20th century, and far above the low point of the 1970s. Similar shifts can be seen across parts of Europe, Canada, Australia and beyond. Whether measured by statistics or by public mood, immigration is no longer a marginal issue. It has moved to the centre of debates about national politics, cultural identity and economic governance.

What is striking is that this change has not always matched what voters say they want. Long-running surveys in the United States have repeatedly shown that many people would prefer immigration to be reduced rather than increased. Similar patterns appear in a number of European countries. People do not necessarily oppose all immigration, but they often feel that immigration levels are too high, or at least that governments have not managed migration flows well. A clear gap has opened up between what voters say they want and what they have actually received.

This gap becomes especially sharp when the subject is irregular migration. Compared with people arriving on work visas, student visas or family reunification routes, those who cross borders without authorisation and then claim asylum after arrival are far more likely to create a sense that the system is out of control. The controversies at the US-Mexico border, the boats crossing the Mediterranean, the small vessels crossing the English Channel, and disputes over undocumented migrants in countries such as South Africa and Colombia all point to the same reality: public attitudes toward immigration are not abstract. People care about order, rules and control. Even when irregular migrants make up only a minority of total migration, their political impact can be disproportionately large.

This helps explain why immigration has become a central issue for many right-wing populist parties. In their story, excessive immigration does not merely put pressure on wages or public services; it also weakens cultural continuity and creates communities that live apart from one another. Such claims are often exaggerated, inflammatory and sometimes openly exclusionary. Yet they gain traction because they speak to anxieties that are not entirely imaginary: housing shortages, pressure on public services, changes in local identity, and a loss of trust in the state’s ability to manage its borders.

On the other side stands an equally confident camp. This group sees itself as pro-immigration and emphasises the economic energy, cultural diversity and moral legitimacy that migrants bring. From this point of view, those who oppose immigration are often dismissed as racists, narrow nationalists or people who fail to understand economic growth. The debate quickly turns into an exchange of moral labels. One side says immigration is destroying the country; the other says immigration is saving it. One side treats migrants as a threat; the other treats migration as a national superpower.

The problem is that both positions are too easy. Asking whether immigration is good or bad is rather like asking whether food is good or bad. No serious person talks about food that way, because we understand that food has types, quantities, quality, distribution and context. Immigration is no different. Different kinds of migrants, different levels of migration, different institutional capacities, and different time horizons can all lead to different conclusions. The hard part is not choosing a tribe. The hard part is admitting that immigration always involves trade-offs.

The effects of immigration on local populations are usually not as disastrous as its critics claim, but they are also not as miraculous as its supporters suggest. Take wages, for example. Many people worry that immigration lowers the pay of native-born workers, especially those in lower-paid jobs. Most evidence from the United States and other high-income countries suggests that immigration has only a small effect on the overall wages of local workers. It has not caused a catastrophic collapse in wages, but nor has it delivered a great rise in pay. In other words, immigration is neither the sole explanation for wage stagnation nor a magic solution to it. Complex issues become dangerous precisely because each side can simplify them into whatever slogan it prefers.

What we need, then, is not to join one camp or the other, but to change the way we talk. Immigration policy is not a moral performance. It cannot be reduced to “welcome everyone” or “keep everyone out”. It is a system of rules about borders, numbers, rights, resources and the future shape of a population. It has to answer uncomfortable questions: Who should be allowed to come? Who should not? Why them? What rights should they have once they arrive? What costs will local residents bear, and what benefits might they receive?

Immigration Policy Is, First of All, a Set of Trade-Offs

As long as national borders exist, and as long as countries differ dramatically in income, opportunity and security, immigration policy will not disappear. A high-income country cannot say yes to everyone who wants to enter, because the number of people who would like to move is much larger than the number that residents are willing to admit. At its core, immigration policy means opening the door to some applicants while closing it to others. That may sound harsh, but it is the starting point of any realistic policy.

Much of the public debate becomes confused because neither side wants to fully acknowledge this starting point. The pro-immigration side often stresses rights, compassion and openness, while avoiding the question of whether numbers must be limited. The anti-immigration side constantly invokes borders, order and national priority, but rarely considers seriously which migrants are genuinely beneficial or which restrictions create unnecessary cruelty. Moral posturing replaces policy discussion, and the details that matter most are pushed into the background.

When a country designs an immigration policy, the first thing it must consider is population. Immigration changes not only the labour market, but also the size of the population, its age structure, its skills profile, its ethnic and religious composition, and the daily life of local communities. Any immigration policy must answer two questions: How fast do we want the population to grow? And what kind of population mix do we want to create? If fertility rates remain low, many countries will face population decline without immigration. Their workforces may shrink, and the pressure of ageing will increase. In this context, immigration can certainly ease some problems.

But immigration cannot magically solve population ageing. A common misconception is that a country can offset an ageing population simply by continually bringing in young migrants. The problem is that migrants age too. They may arrive young, healthy and employed, but time does not stop for them. Decades later, they too will retire; they too will need healthcare, pensions and public services. Immigration can delay some of the pressures created by ageing, but it cannot abolish ageing itself.

Population growth also comes with costs. New arrivals need homes, transport, schools, hospitals, energy and public infrastructure. When they enter the labour market, they also require machines, workplaces, capital equipment and training systems. If the population grows quickly but capital investment and public services do not keep up, resources per person may be diluted. Britain’s recent experience of high immigration and rapid population growth shows this pressure clearly: the faster the population grows, the more investment is needed simply to maintain the existing level of capital and public provision per person.

This does not mean that high immigration is always bad. It may bring more workers, more consumers, more tax revenue and greater economic dynamism. But it also requires society to build housing more quickly, expand infrastructure and increase spending on public services. If the political system enjoys the benefits while refusing to pay for the costs, public resentment will grow. People see the population increasing, but they do not see roads, schools, clinics and housing supply increasing at the same pace. It is hardly surprising that they begin to connect their everyday pressures with immigration.

The key question, then, is not simply whether to have immigration, but how much, what kind, at what pace and with what supporting institutions. Canada and Australia are often discussed because they are relatively explicit about planning both the level and the composition of migration. At the very least, their systems acknowledge the need to choose. A mature immigration system should not pretend that limitless openness is possible. Nor should it treat every outsider as a threat. It must state clearly what it wants, and it must be honest about what it refuses.

Population, Capital and the Power of Lobby Groups

There is another issue in immigration policy that is often underestimated: who gets to influence it? On the surface, immigration policy appears to be made by governments in the national interest. In practice, a wide range of interest groups try to present their own needs as national needs. Businesses, universities, industry associations, local governments, charities, labour organisations and migrant-rights groups all take part. The problem is not that they should be silent. The problem is that their voices are often more organised, more technical and more persistent than those of ordinary voters.

Business lobbying is especially important in immigration policy. Many employers want more liberal rules for work migration because this expands the labour supply, eases recruitment difficulties and, in some sectors, helps keep labour costs down. Businesses rarely say, “We want cheaper and more manageable labour.” They say, “The national economy needs these workers,” or “Public services depend on these roles,” or “The sector cannot survive without immigration.” Sometimes these claims are true. But they are not always the whole truth.

If a company says it lacks customers, we usually do not assume that the government has a duty to provide them. We might ask whether its product is overpriced, whether its quality is poor, or whether its business model is failing. Yet when an employer says it cannot find workers, the conversation often turns immediately to whether the state should admit more migrants. There is a reasonable case for this in some situations. Certain jobs really are hard to fill, and some public services genuinely depend on migrant labour. But we should ask the same questions here too: Are wages too low? Are working conditions too poor? Has the training system failed? Are employers using immigration policy to avoid costs they ought to bear themselves?

This creates a subtle political paradox. Progressives usually criticise businesses when they demand lower taxes, weaker regulation or lower minimum wages, because they know that business interests are not the same as the public interest. But when businesses demand more liberal rules on work migration, many progressives become cautious, or even supportive, because they fear that criticism will sound anti-migrant. The result is that business lobbying sometimes gains extra moral cover from progressive anxieties.

This is not to say that employer complaints about labour shortages are always false. Healthcare, agriculture, construction, hospitality and technology may all face real shortages at particular moments and in particular places. But policy cannot simply accept the employer’s description of need. It must also consider the bargaining power of local workers, wage levels, vocational training, housing pressure and the long-term structure of the economy. If an industry can survive only through low wages and a constant inflow of migrant labour, the government should at least ask whether this is a model worth preserving. Who pays the cost? Who receives the benefit?

Political scientists have described an “expansionary bias” in immigration policy: organised interests tend to push migration levels upward, while the wider public, though often more sceptical, lacks the same institutional influence. In other words, the forces favouring higher immigration are often concentrated, professional and persistent. Voters who want lower immigration tend to appear only intermittently, through elections or populist backlash. This imbalance can leave migration levels higher than the public expected, and eventually produce a political reaction.

If we want a more honest immigration debate, we need to reduce the dominance of lobbying language. Businesses may say they need workers. Universities may say they need international students. Local governments may say they need population growth. All of these voices deserve to be heard. But they represent partial interests. They should not automatically be translated into the national interest. A good policy process allows them into the discussion, but does not allow them to dictate the answer.

Visas, Borders and the Feeling of Losing Control

Immigration policy is also difficult because the way rules are designed on paper is often not the way they are used in real life. A visa category may have a clear purpose in the mind of policymakers, but once it interacts with applicants, agents, schools, employers and local economies, it may become something else. If policymakers imagine only how rules ought to be used, rather than how they are likely to be used, they can easily create loopholes, scandals and public distrust.

International student visas are a good example. Universities in many countries have argued that foreign students should be allowed to work for a period after graduation. On the surface, this is a sensible policy. It makes the country’s higher education system more attractive and allows talented graduates to remain and contribute to the economy. The problem is that if post-study work rights are too generous, the student visa may become less an education route than a work migration route. For some applicants, studying is not the main purpose. The real attraction is access to the labour market of a high-income country.

This does not mean that all international students are problematic, or that post-study work rights are wrong. The issue is incentives. Less selective institutions, especially those that depend heavily on tuition fees, may recruit large numbers of foreign students as a source of income. Once students, agents and colleges form an ecosystem around this route, governments may discover that student migration has risen quickly and public pressure has increased. They then impose sudden restrictions. Canada, the United Kingdom and Australia have all experienced versions of this cycle of expansion and backlash in student migration policy.

Work visas, care-worker visas and seasonal-worker schemes can face similar problems. A policy may begin as a response to a genuine shortage, but if oversight is weak it can lead to exploitation, fake recruitment, debt bondage, low-wage competition and excessive dependence of migrants on individual employers. Once such problems come to light, they damage public confidence in the immigration system as a whole. People may not distinguish carefully between visa categories, but they form an overall impression: the system is being abused, and the government is not in control.

Even harder to manage are irregular border crossings and asylum claims made after arrival. The US-Mexico border, the Mediterranean route and small boats crossing the English Channel have become political flashpoints precisely because they create a powerful sense of disorder. For many people, a national border is not just a line on a map. It is a political promise: the state should know who enters, under what status, and whether they have a right to stay. If people feel that this promise has been broken, even a relatively small share of irregular migration can generate intense anger.

Here again, both camps reach too quickly for slogans. The hardline side says “detain and deport,” as if political will alone can solve the problem. The open side says “safe and legal routes,” as if regular pathways would automatically eliminate irregular movement. Reality is much harder. Large-scale detention and deportation require money, administrative capacity, legal procedures and cooperation from origin countries. Safe and legal routes are difficult to design: if eligibility is too broad, numbers may rise; if it is too narrow, the people who would have crossed irregularly may not qualify.

Experience suggests that major reductions in irregular migration usually require agreements between countries, not just slogans from one government. Australia reduced unauthorised boat arrivals through regional arrangements and maritime enforcement. The EU-Turkey agreement sharply reduced crossings through the eastern Mediterranean to Greece. The fall in encounters at the southern border of the United States has also depended heavily on cooperation with Mexico over returns and border management. These policies are controversial, but they show that border control is rarely something one country can achieve alone.

So when we talk about irregular migration and asylum, we should not reduce the issue either to ruthless enforcement or to unlimited welcome. A sustainable system must do three things at once: protect those who genuinely need refuge, reduce dangerous and disorderly movement, and maintain public trust in border management. These goals do not naturally fit together. They often conflict. That is why they require serious, slow and rather unglamorous policy design.

Short-Term Gains and the Long-Term Ledger

Immigration policy also has a time dimension that is often overlooked. Many migrants are fiscally beneficial when they first arrive. They are young, healthy and employed; they often have limited access to welfare; and they begin paying taxes quickly. High-earning and highly skilled migrants are especially likely to contribute more in taxes than they receive in public spending. From a short-term fiscal perspective, attracting more migrants can look very convenient: more workers, a larger tax base and better headline growth.

But policy cannot look only at the short term. People age. Families grow. Health changes. Children need schools. Parents may require care. Unemployment and low income can appear at different stages of life. Some migrant groups may make a positive contribution to the public finances in their first years after arrival, but the picture may change over the long run. This is not a criticism of migrants. It is a basic fact about any population policy: people are not one-off economic inputs. They are members of society whose needs and contributions evolve over decades.

Short-sighted governments are often tempted to use immigration to delay difficult decisions. A country lacks care workers, but instead of raising wages, improving conditions or investing in training, it imports more care labour. A country has weak economic growth, but instead of tackling poor productivity, housing shortages or a rigid economic structure, it expands the population to maintain overall GDP growth. A government faces fiscal strain, but instead of reforming pensions and healthcare, it brings in young workers to increase tax revenue. Such strategies may work for a while, but they often push the problem into the future.

This is why the phrase “immigration boosts economic growth” needs to be handled carefully. Immigration usually increases the size of the economy, because more people means more labour, more consumption and more production. But ordinary people do not care only about total GDP. They care about income per person, affordable housing, public service quality, commute times, community stability and working conditions. If immigration expands the economy without improving living standards per head, many local residents will not experience that growth as a benefit.

At the same time, the anti-immigration side often ignores long-term realities of its own. Many high-income countries have low fertility, ageing populations and labour shortages. If immigration were suddenly cut sharply, some industries would suffer serious disruption. Universities would lose revenue; care work and agriculture would face supply problems; fiscal pressures might increase. Low immigration does not automatically mean better lives for local people. It may force necessary reforms, but it may also create new shortages and higher costs.

A more mature debate would admit that immigration brings short-term gains and long-term costs, while restricting immigration brings political rewards and economic trade-offs. We cannot judge policy on only one time horizon. If governments emphasise today’s fiscal benefits without explaining tomorrow’s service costs, they are being dishonest. If critics emphasise immediate pressures without acknowledging the risks of population decline and labour scarcity, they are being dishonest too. The difficulty of immigration policy lies precisely in the fact that it forces us to look at both the present and the future.

There Is No Free Answer Between Numbers and Rights

One helpful way to think about immigration policy is through the trade-off between numbers and rights. Put simply, a country that wants very high levels of immigration will often restrict migrants’ rights. A country that wants to give migrants extensive social, economic and political rights will usually be more cautious about the number it admits. This is not a pleasant conclusion, but it captures something important about the real world.

The Gulf states illustrate the first model. In countries such as the United Arab Emirates, migrants make up a very large share of the population. Many citizens accept this high level of immigration partly because migrants do not have a realistic path to permanent residence or citizenship, and their social rights are tightly limited. Citizens receive services, construction and economic growth from migrant labour without having to fully incorporate migrants into the political community. For migrants, this arrangement may involve poor labour protections and low social status. Yet many accept the bargain because the earnings are still better than what they could expect at home.

European social democracy represents something closer to the second model. Migrants may not receive full rights from their first day of arrival, but many can eventually gain long-term residence, access to welfare and even citizenship. This model is more consistent with ideals of equality and social integration. But it also means that the receiving country must think more carefully about whom it admits. Once migrants are incorporated into the welfare state and the political community, they are no longer just workers. They are future citizens, taxpayers, welfare users and members of the shared public realm.

This is why “high immigration and high rights” is not an easy combination. It is morally attractive, but it requires very strong institutional capacity in housing, public services, labour protection and social integration. Conversely, “low immigration and little concern for migrant rights” is not an admirable answer either. It may reduce some social pressures, but it can also encourage indifference, exclusion and institutional unfairness toward outsiders. Both sides like to pretend they face no trade-off. Reality is less forgiving.

The real question is not which tribe we belong to, but which trade-offs we are willing to bear. If we choose higher immigration, we must talk about housing, infrastructure, public services, labour standards and integration. If we choose lower immigration, we must talk about labour shortages, ageing, industrial adjustment and the denial of opportunity to potential migrants. If we give migrants more rights, we must accept that local residents may demand stricter selection at the point of entry. If we restrict migrants’ rights, we must ask whether that system is morally defensible.

The immigration debate in many countries is so exhausting because it refuses this honesty. The pro-immigration side wants to emphasise the benefits while softening the costs. The anti-immigration side wants to emphasise the threats while overlooking migrants’ real contributions. Both sides tell stories instead of making policy. But immigration policy is not meant to express moral purity. It is meant to manage population movement in a deeply unequal world.

Perhaps what we should ultimately aim for is not a more exciting immigration debate, but a more boring one. Boring does not mean unimportant. It means less dominated by emotion, fear and moral self-congratulation. In a mature country, immigration policy should be discussed like tax systems, housing planning or pension reform: seriously, carefully and slowly. It should have numbers, targets, limits, rights, and an honest account of long-term consequences.

If one day immigration policy no longer serves as a tool for inflaming voters, no longer functions as an identity war on social media, and no longer acts as a flag by which parties divide friends from enemies, then perhaps we will have made progress. Migration will still exist. Trade-offs will still exist. The tension between borders and rights will still exist. But at least we will no longer pretend that there are only two possible answers: welcome everyone, or reject everyone.

What we need is a calmer political imagination. It should recognise that migration gives many people opportunity, while also recognising that receiving societies have limits. It should care about the rights of migrants, and also about the lives of local residents. It should be open, but not limitless; restrictive, but not cruel. It should refuse to force complex questions into simple slogans. Perhaps a good immigration policy is one that is clear enough, fair enough and sustainable enough that it finally stops being the centre of daily political conflict. In other words, we should hope for immigration policy to become boring. Only when it is no longer forced to carry all our fears and all our fantasies can it become truly rational.