Economic Effects of Immigration
In this section, we will analyze how foreign born workers can benefit an economy, how immigrant workers impact wage rates, and how immigration influences federal and local government spending.
To understand the economic consequences of immigration, consider the following scenario. Imagine that the immigrants entering the United States matched the existing U.S. population in age range, education, skill levels, family size, occupations, and so on. How would immigration of this type affect the rest of the U.S. economy? Immigrants themselves would be much better off, because their standard of living would be higher in the United States. Immigrants would contribute to both increased production and increased consumption. Given enough time for adjustment, the range of jobs performed, income earned, taxes paid, and public services needed would not be affected much by this kind of immigration. It would be as if the population simply increased a little.
Now, consider the reality of recent immigration to the United States. Immigrants are not identical to the rest of the U.S. population. About one third of immigrants over the age of 25 lack a high school diploma. As a result, many of the recent immigrants end up in jobs such as restaurant and hotel work, lawn care, and janitorial work. This kind of immigration represents a shift to the right in the supply of unskilled labor for a number of jobs, which will lead to lower wages for these jobs. The middle- and upper-income households that purchase the services of these unskilled workers will benefit from these lower wages. However, low-skilled U.S. workers who must compete with low-skilled immigrants for jobs will tend to suffer from immigration.
The difficult policy questions about immigration are not so much about the overall gains to the rest of the economy, which seem to be real but small in the context of the U.S. economy, as they are about the disruptive effects of immigration in specific labor markets. One disruptive effect, as just noted, is that immigration weighted toward low-skill workers tends to reduce wages for domestic low-skill workers. While research is ongoing, and no definitive conclusions have been reached, one study by Michael S. Clune found that for each 10 percent rise in the number of employed immigrants with no more than a high school diploma in the labor market, high school students reduced their annual number of hours worked by 3 percent. The effects on wages of low-skill workers are not large—perhaps in the range of about a 1 percent decline. These effects are likely kept low, in part, because of the legal floor of federal and state minimum wage laws. In addition, immigrants are also thought to contribute to an increased demand for local goods and services, which can stimulate the local low skilled labor market. It is also possible that employers, in the face of abundantly low-skill workers, may choose production processes that are more labor intensive than otherwise would have been. These various factors would explain the small negative wage effect observed among the native low-skill workers as a result of immigration.
Another potential disruptive effect is the impact on the budgets of state and local government. Many of the costs imposed by immigrants are costs that arise in state-run programs, such as the cost of public schooling and welfare benefits. However, many of the taxes that immigrants pay are federal taxes, such as income taxes and Social Security taxes. Many immigrants do not own property—such as homes and cars—so they do not pay property taxes, which are one of the main sources of state and local tax revenues. They do pay sales taxes, which are state and local, and the landlords of the property they rent pay property taxes. According to the nonprofit Rand Corporation (2012), the effects of immigration on taxes are generally positive at the federal level, but they are negative at the state and local levels in places where there are many low-skilled immigrants.
As noted above, despite the studies cited in this section, other studies have reached different conclusions, thus economic research continues into this important issue.