Illegal immigration is often debated in terms of its benefits and costs to the American economy. Supporters emphasize the labor it provides, while critics point to its effects on wages, public services, and border security. But this debate often overlooks a larger question: What happens when an economy becomes dependent on workers who lack legal immigration status, and what are the consequences for the people and countries supplying that labor?
The effects extend far beyond the American labor market. They include the creation of a vulnerable workforce, reduced incentives for businesses to modernize, dangerous migration routes, and a profitable criminal economy. They also raise a troubling question about the countries migrants leave behind: Can these societies build stronger economies and institutions while losing part of the working-age population needed to sustain them?
A Labor Market Built on Vulnerability
For decades, major sectors of the American economy—including agriculture, construction, hospitality, landscaping, and food processing—have relied heavily on workers without legal immigration status. According to Pew Research Center’s 2025 analysis, unauthorized immigrants accounted for 5.6 percent of the U.S. workforce in 2023, but 15 percent of construction workers, 14 percent of agricultural workers, and 8 percent of workers in leisure and hospitality. In specific occupations, the concentrations were even higher: 24 percent of farming workers and 19 percent of construction workers.
This dependence creates an economic contradiction. Workers without legal status have become important to certain industries while often having far less bargaining power than their legally authorized counterparts. Although federal and state laws provide workplace protections regardless of immigration status, the threat of detention, deportation, or employer retaliation can make those rights difficult to exercise. The U.S. Department of Labor explicitly recognizes that wage protections apply regardless of immigration status.
The result is a de facto economic underclass: a workforce that certain industries depend upon but whose vulnerable legal position can make workers easier to exploit. Fear of deportation or retaliation can discourage workers from reporting wage theft, unsafe conditions, or other abuses. Employers who take advantage of that vulnerability may gain a competitive edge over businesses that follow labor standards, creating pressure that can extend beyond illegal immigrants to the broader workforce.
The consequences can become deeply embedded in the economy. When industries grow accustomed to a steady supply of workers with limited bargaining power, they may have less incentive to improve wages, working conditions, or productivity. Over time, the system can become dependent not simply on immigrant labor, but on the very vulnerability of the people providing it.
The Hidden Cost of Cheap Labor
When labor is plentiful and inexpensive, businesses have less incentive to invest in automation, new technologies, or more efficient ways of operating. But when workers become harder to find or more expensive to employ, those investments become more attractive. In other words, labor shortages can encourage businesses to modernize in ways they might otherwise have delayed.
This raises an important question about industries that have relied on illegal immigrant labor for decades. Has the continued availability of relatively inexpensive workers allowed some businesses to postpone investments that could have improved productivity?
The relationship is not automatic. Many businesses employing immigrant workers have also invested heavily in technology, and some tasks remain difficult or costly to automate. Still, the economic incentive is straightforward. If hiring additional workers remains cheaper than purchasing machinery or redesigning operations, businesses may have little reason to change.
The tightening of immigration enforcement and migration flows in 2025 brought this dependence into sharper focus. An August 2025 survey by the Associated General Contractors of America and the National Center for Construction Education and Research found that 92 percent of responding construction firms were having difficulty filling positions, while 45 percent reported project delays associated with labor shortages. Nearly one-third said immigration enforcement had affected their workforce.
These findings do not establish that illegal immigration caused technological stagnation or that enforcement will automatically produce greater productivity. They do, however, reveal the labor pressures facing an industry with a substantial immigrant workforce.
The longer-term question is whether reduced access to inexpensive labor will encourage greater investment in machinery, automation, and more productive ways of working—or whether businesses will instead respond by raising prices, reducing output, or seeking other sources of labor.
An advanced economy ultimately depends on improving what workers can produce, not simply on maintaining an abundant supply of inexpensive workers. To the extent that reliance on vulnerable labor delays those improvements, the apparent savings can carry a longer-term economic cost.
The Human Cost of Illegal Migration
The consequences of illegal immigration are not confined to the workplace. Long before migrants reach the United States, many face dangers that are rarely reflected in discussions about labor supply or economic growth.
Doctors Without Borders, also known as Médecins Sans Frontières (MSF), has documented widespread violence along migration routes through Mexico and Central America. Migrants traveling through areas controlled or influenced by criminal organizations can face robbery, kidnapping, extortion, and sexual assault. Their vulnerability is often compounded by limited access to police protection, medical care, or legal assistance.
The evidence concerning sexual violence is particularly disturbing. In its 2017 report, Forced to Flee, MSF presented findings from a survey conducted in Mexico in 2015. Among 429 respondents who answered questions about sexual and gender-based violence, 31.4 percent of women and 17.2 percent of men reported experiencing sexual abuse during transit. Using the narrower category of rape and other direct forms of sexual violence, the figures were 10.7 percent of women and 4.4 percent of men.
These findings come from migrants encountered at facilities along dangerous migration routes and should not be treated as representative of everyone who migrates illegally. Nevertheless, they document an alarming level of abuse, including sexual violence against men, whose experiences may be especially underreported because of stigma and fear.
The problem has persisted. In February 2024, MSF reported a sharp increase in sexual violence against migrants crossing the Darién Gap, the dangerous jungle corridor between Colombia and Panama. Its medical teams documented attacks involving armed groups and severe physical and psychological trauma.
There is a fundamental contradiction here. People often undertake illegal migration in search of safety, opportunity, and a better life, yet the journey can expose them to extraordinary violence. Limited access to safe legal pathways, combined with the demand for entry outside established immigration channels, creates opportunities for smugglers and other criminal intermediaries.
For some migrants, the price of reaching the United States is measured not simply in money, but in physical injury, sexual violence, psychological trauma, and even death.
How Illegal Migration Enriches Criminal Organizations
Illegal migration has also become a lucrative business for criminal organizations operating along routes to the United States.
The United Nations Office on Drugs and Crime has documented the substantial profits generated by migrant smuggling and its connections to corruption and other criminal activity. According to estimates published by UN Trade and Development, smuggling foreign migrants into the United States generated more than $1.1 billion annually in illicit financial inflows for smugglers based in Mexico during 2016–2018.
That figure is not a measure of cartel revenue specifically, nor does it capture every criminal payment associated with migration. It nevertheless illustrates the financial scale of the market. As long as large numbers of people seek to enter the United States illegally, criminal groups operating along migration routes have opportunities to collect payments, impose fees, and extort travelers.
Migrant smuggling and human trafficking are distinct crimes. Smuggling generally involves arranging illegal border crossings for payment, while trafficking involves exploitation through force, fraud, or coercion. But the two can overlap. Someone who initially pays a smuggler may later become a victim of kidnapping, forced labor, sexual violence, or extortion.
The larger concern is what happens to the money.
Across parts of Latin America, cartels and other criminal organizations have become more than businesses operating outside the law. Some control territory, collect protection payments, intimidate residents, and influence police, courts, and political institutions. A 2025 study published in Perspectives on Politics, examining 18 Latin American countries, estimated that between 77 million and 101 million people live in communities where criminal groups provide some form of order or security. In these areas, criminal organizations can exercise powers normally associated with government, sometimes operating alongside or through public officials.
This phenomenon, known as criminal governance, illustrates how deeply organized crime can become embedded in a society. Research by the Global Initiative Against Transnational Organized Crime has also documented how criminal organizations diversify their activities and penetrate government institutions. Revenue from migrant smuggling can therefore become part of a much larger criminal economy, potentially strengthening organizations already involved in extortion, drug trafficking, corruption, and territorial control.
The degree of cartel involvement differs across countries and migration routes, and not every smuggling operation is controlled by a major cartel. Nor can every instance of government corruption be attributed to migration revenue. But the underlying danger is clear: a recurring market for illegal migration can provide additional income to criminal organizations already capable of weakening the institutions that societies depend upon.
A Snake Eating Its Own Tail
Perhaps the most overlooked consequence of illegal immigration is what happens to the countries people leave behind.
When large numbers of working-age people depart poorer countries for the United States, those countries lose more than employees. They may also lose future entrepreneurs, skilled tradespeople, taxpayers, business owners, and community leaders. These are people who might otherwise have contributed to building stronger economies and institutions in their own countries.
Migration is not random. People who undertake difficult international journeys are often relatively young and economically active, with the determination and resources needed to pursue opportunities abroad. This does not mean they are inherently more capable than those who remain, but their departure can still represent a meaningful loss of labor and potential human capital.
The impact is especially concerning in countries already struggling with weak institutions, limited economic opportunity, and organized crime. Those societies need investment, productive workers, functioning businesses, and stronger civic institutions. Continued emigration can make some of those goals harder to achieve, particularly when communities lose workers and skills faster than they can replace them.
The World Bank’s World Development Report 2023 acknowledges this concern, identifying the loss of skilled workers and human capital as a potential cost for sending countries. It also recognizes that the consequences vary depending on the workers who leave and the economic conditions of their home countries.
Remittances are frequently presented as an economic benefit that offsets this loss. Money sent home can certainly support families, finance education, and improve living standards. But financial transfers are not the same as having workers, entrepreneurs, and skilled professionals contributing directly to the economy where they were raised.
There is also an important distinction between illegal immigration and a regulated temporary-worker program. A properly structured program can allow people to earn money abroad while establishing legal employment conditions and a framework for eventual return. Such programs are not without problems, and return is not guaranteed. Nevertheless, they are fundamentally different from a system in which people enter illegally and may remain indefinitely, without any coordinated plan connecting their employment abroad to the long-term development of their home countries.
This is where the broader system begins to resemble a snake eating its own tail.
Weak institutions, criminal violence, and limited economic opportunities encourage people to leave their countries. Their journeys create opportunities for criminal organizations to extract money, potentially strengthening groups already involved in corruption, territorial control, and violence. Meanwhile, the departure of working-age people can weaken the economic prospects of communities already struggling to develop. Under these conditions, migration can become part of a cycle that reinforces some of the very problems driving people to leave.
This does not mean migration created Latin America’s institutional problems, or that individuals should remain in dangerous or impoverished conditions to help rebuild their countries. The decision to migrate can be entirely rational. But millions of individually rational decisions do not necessarily produce the best long-term outcome for the societies involved.
The contradiction extends to the United States, where businesses can benefit from a workforce whose legal vulnerability makes exploitation easier and may reduce incentives for modernization. Migrants can endure terrible abuse along routes that generate revenue for criminal organizations, while the countries they leave behind risk losing part of the workforce needed for economic recovery.
The challenge is not simply to measure how much labor illegal immigration provides the United States. It is to understand the economic and human system that makes that labor available—and whether the benefits of that system are being achieved at costs that remain largely hidden.