The Economics of Immigration

• A. To reduce the overall population of their home country
• B. Wage differentials and expected income gains between origin and destination ✓
• C. To avoid paying taxes in their home country
• D. Because labor markets in destination countries are always smaller

Why: Labor migration is driven mainly by differences in expected earnings between countries. Workers compare the wages and employment prospects they could obtain at home with those available abroad, net of migration costs.

• A. A government policy that encourages immigration
• B. A condition in the origin country that encourages people to leave, such as unemployment or low wages ✓
• C. A special visa program for skilled workers
• D. The cost of transporting migrants across borders

Why: Push factors are negative conditions in the origin country, such as poverty, unemployment, conflict, or political instability, that motivate people to emigrate. Pull factors, by contrast, are attractions in the destination country.

• A. Rising unemployment in the destination country
• B. Higher wages and greater job availability in the destination country ✓
• C. Natural disasters in the origin country
• D. Restrictive immigration laws in the destination country

Why: Pull factors are attractions of the destination, such as higher wages, job opportunities, and better living standards. Unemployment and restrictive laws would discourage migration, while disasters are push factors.

• A. The loss of skilled and highly educated workers from a country to others ✓
• B. A decline in the mental health of migrant workers
• C. The process of training foreign workers in destination countries
• D. A reduction in the number of university graduates in the destination country

Why: Brain drain describes the emigration of highly skilled, educated professionals from developing or origin countries to more developed destinations, which can reduce the origin country's stock of human capital.

• A. The Keynesian multiplier model
• B. The Harris-Todaro model ✓
• C. The Phillips curve
• D. The Solow growth model

Why: The Harris-Todaro model (1970) explains rural-to-urban migration as a response to expected wage differentials, where workers migrate based on the probability of obtaining a high-paying urban job, even when urban unemployment exists.

• A. Wages rise because more workers means higher productivity
• B. Wages fall because the supply of labor shifts outward, pushing the equilibrium wage down ✓
• C. Wages stay exactly the same because natives and immigrants are never substitutes
• D. Wages become fixed by law regardless of labor supply

Why: In a basic competitive labor market, an increase in labor supply shifts the supply curve to the right, which lowers the equilibrium wage if demand is unchanged. This is the core prediction of the simple model, though the size of the effect depends on how similar immigrants are to natives.

• A. Substitutes are always legal immigrants while complements are always undocumented
• B. Substitutes compete directly with natives for the same tasks and can depress their wages, while complements work in different tasks and can raise native productivity and wages ✓
• C. Complements are paid more than natives by law
• D. Substitutes only affect the wages of other immigrants, never natives

Why: The effect of immigration on natives depends on the skill and task overlap. Workers who perform similar tasks compete with natives, while workers with complementary skills can increase the marginal product of natives, potentially raising their wages.

• A. Comparing wage changes across cities receiving different inflows of immigrants to estimate effects on native wages ✓
• B. Surveying employers about their hiring intentions
• C. Tracking the global price of commodities across countries
• D. Measuring only the wages of immigrants themselves over time

Why: The local labor market approach compares metropolitan areas that received large versus small immigrant inflows, examining how native wages or employment changed. Because immigrants tend to cluster in certain cities, this gives a natural comparison for estimating impacts.

• A. It was the first time immigration was ever recorded in the United States
• B. It produced a sudden, large, and largely unexpected labor supply shock in one city, allowing researchers to compare outcomes with other cities ✓
• C. It was the only immigration event that involved high-skilled workers
• D. It caused the federal government to abolish all immigration quotas

Why: The Mariel boatlift created an exogenous, sudden jump in Miami's labor force, and Card's 1990 study used comparison cities to estimate the effect. The episode was influential because the shock was relatively clean compared with gradual immigration trends.

• A. Immigration reduces native wages by large amounts for all workers
• B. Immigration has very small average effects on native wages overall, with any negative effects concentrated among workers most similar to immigrants, such as prior immigrants and less-educated natives ✓
• C. Immigration consistently raises native wages for every skill group
• D. Immigration has no measurable effect on any labor market outcome under any circumstances

Why: Most studies find small average wage effects for natives, with the largest potential negative impacts falling on earlier immigrants and workers without high school diplomas who compete most directly with new arrivals. Results vary with methodology, which is why the field remains debated.

• A. Comparing only the wages of immigrants to native-born workers
• B. Comparing tax contributions made by immigrants against the public services and transfers they use, typically measured over a set time horizon ✓
• C. Counting only the number of immigrants who receive welfare benefits
• D. Measuring the total population growth attributable to migration

Why: Fiscal impact studies compare what immigrants pay in taxes with what they receive in public services and transfers, often using a net present value approach over a defined period. This captures the balance of contributions and costs rather than any single metric.

• A. Because immigration has no measurable effect on public budgets
• B. Because results depend heavily on assumptions about immigrant education levels, age profiles, time horizon, and whether children of immigrants are counted ✓
• C. Because all governments calculate taxes in exactly the same way
• D. Because immigrants always pay more in taxes than they receive in benefits in every country

Why: Fiscal estimates are sensitive to modeling choices. Factors such as the skill and age mix of migrants, how long the analysis runs, how costs of public goods are allocated, and whether second-generation children are included can shift the bottom-line result considerably.

• A. Elderly immigrants who arrive after retirement age
• B. Working-age immigrants who arrive as adults, particularly those with higher education and employment ✓
• C. Children who arrive with no adult supervision
• D. Immigrants who remain permanently unemployed

Why: Working-age adults typically contribute more in taxes during their productive years while requiring fewer costly services such as education and elderly care, which tends to produce a favorable net fiscal contribution, especially for higher-skilled workers.

• A. The number of immigration violations recorded by border agencies
• B. The distribution of how costs and benefits of immigration fall across different levels of government and different groups of people ✓
• C. The frequency with which immigrants change jobs
• D. The rate at which immigrants obtain citizenship

Why: Fiscal incidence examines who bears the costs and who reaps the benefits. Federal, state or regional, and local governments often experience different fiscal effects, since they collect different taxes and provide different services.

• A. Local governments never collect any taxes
• B. Local governments may bear costs such as schooling and emergency services while national governments receive most income tax revenue, so the burdens and gains are distributed unevenly ✓
• C. National governments are legally barred from receiving tax revenue from immigrants
• D. Local impacts are always exactly equal to national impacts

Why: Many public services such as primary education and local health care are funded and delivered locally, while major revenues like income and payroll taxes flow largely to national budgets. This mismatch can make immigration appear costly locally even when it is net positive nationally.

• A. They perform identical tasks and compete for the same jobs
• B. An increase in the supply of one type of worker raises the marginal productivity of the other type ✓
• C. Their wages are always set equal by collective bargaining agreements
• D. One worker's employment fully replaces the other's in every industry

Why: Complementarity means the two factors enhance each other's productivity. When the supply of one rises, the other becomes more productive at the margin, so the other's wages can rise rather than fall.

• A. Reduce the wages of all native workers, regardless of skill level
• B. Increase the productivity and wages of complementary native workers ✓
• C. Leave the productivity of native workers unchanged in every case
• D. Eliminate demand for native workers in the affected industries

Why: When immigrants fill roles that work alongside native skills, natives can specialize in tasks where they have comparative advantage, raising their productivity and often their wages.

• A. Surgeons and anesthesiologists working together in one operation
• B. Two construction laborers performing interchangeable manual tasks at the same site ✓
• C. Engineers designing software and project managers scheduling the work
• D. Teachers and school administrators coordinating a curriculum

Why: Substitutes can perform the same tasks, so adding one more worker of the same type competes directly with existing workers, which can put downward pressure on their wages. The laborers here are interchangeable.

• A. Because immigration policy legally requires separate categories for each skill level
• B. Because the wage effects of immigration can differ substantially depending on how immigrant skills relate to native skills ✓
• C. Because native workers with different education levels always have identical wages
• D. Because skill categories are the only data available in census records

Why: Aggregate analysis can hide important effects. Whether immigrants substitute for or complement natives depends on the skill mix, so grouping by skill reveals where wage impacts are concentrated.

• A. Measure the exact number of undocumented immigrants in a country
• B. Model how workers with different skills and experience levels interact in production and estimate complementarity ✓
• C. Calculate the fiscal cost of public services used by immigrant households
• D. Determine the citizenship eligibility of applicants by education level

Why: Nested CES (constant elasticity of substitution) production models allow economists to specify how various labor groups substitute or complement one another, which is essential for estimating wage effects of immigration.

• A. Skilled-worker visas are only available to refugees, while family visas are for economic migrants.
• B. Skilled-worker visas are typically allocated based on labor market needs or qualifications, while family visas are based on existing family relationships to citizens or residents.
• C. Family-sponsored visas require the applicant to have a university degree, while skilled-worker visas do not.
• D. Skilled-worker visas are permanent, while family-sponsored visas are always temporary.

• A. The loss of highly educated or skilled workers from a country to other countries, which can reduce the origin country's human capital.
• B. The increase in university enrollment caused by foreign students studying abroad.
• C. The decline in tax revenue when immigrants fail to find employment.
• D. The process by which immigrants gradually lose their native language skills.

• A. It guarantees that all applicants will receive citizenship within five years.
• B. It allows governments to select immigrants based on measurable characteristics such as education, language skills, and age, aligning admissions with labor market needs.
• C. It eliminates the need for border enforcement entirely.
• D. It ensures that immigrant wages will always be equal to native wages.

• A. A program that grants immediate permanent residency to all seasonal workers.
• B. A system allowing foreign workers to enter a country for a limited period to fill specific jobs, usually without a path to permanent settlement.
• C. A system where tourists are allowed to work without any registration.
• D. A government program that pays citizens to relocate to rural areas.

• A. Because enforcement always increases the overall size of the native labor force.
• B. Because stricter enforcement can raise the cost of crossing, which may encourage longer stays and discourage circular migration, and may also increase the use of informal labor markets.
• C. Because enforcement policies have no effect on migration flows under any circumstances.
• D. Because border controls automatically increase government spending on education.

• A. The Universal Declaration of Human Rights
• B. The 1951 Convention Relating to the Status of Refugees ✓
• C. The International Covenant on Economic, Social and Cultural Rights
• D. The Dublin Regulation

Why: The 1951 Refugee Convention, with its 1967 Protocol, defines who qualifies as a refugee and prohibits returning people to places where they face persecution (non-refoulement).

• A. Asylum seekers are automatically assumed to be unskilled
• B. Governments aim to reduce the perceived pull factor of economic migration and to limit fiscal and labor-market pressures during processing ✓
• C. International law requires that asylum seekers never work
• D. Employers are legally prohibited from hiring any foreign-born workers

Why: Work restrictions during processing are often justified as deterring economic migrants from using the asylum system and easing labor-market and fiscal pressures, though critics argue they waste human capital and increase dependency.

• A. Refugees always lower wages for native workers permanently
• B. Skills, education, and language ability strongly predict employment and earnings after resettlement, and early labor-market access tends to improve outcomes ✓
• C. Refugees' skills have no relevance to their economic outcomes
• D. Only refugees with university degrees can ever become economically self-sufficient

Why: Research on refugee integration consistently finds that pre-migration skills, education, and host-country language proficiency matter, and that earlier access to work supports better long-term employment.

• A. Refugees have crossed a border; asylum seekers have not
• B. A refugee has already been recognized under the legal definition, while an asylum seeker has applied for that status and is awaiting a decision ✓
• C. Asylum seekers are always granted protection; refugees are not
• D. Refugees are only found in camps; asylum seekers live in cities

Why: Refugee status is conferred after a determination that the person meets the legal definition; an asylum seeker is someone whose claim has not yet been decided.

• A. Individuals who arrive undocumented and apply for work permits
• B. Refugees selected abroad, typically through UNHCR referral, and admitted by a receiving country with prior approval ✓
• C. Migrants who enter on tourist visas and overstay
• D. Workers admitted under temporary employment schemes

Why: Resettlement involves refugees identified outside the host country, usually via UNHCR, and admitted through a planned quota, distinguishing it from people who arrive and then claim asylum.

• A. The immigrant share of the total population at a single point in time
• B. The earnings gap between immigrants and natives, tracked across years since arrival
• C. The number of immigrants who apply for citizenship each year
• D. The total remittances sent by immigrants to their home countries

• A. Immigrant earnings will permanently remain below native earnings regardless of time spent in the host country
• B. Immigrant earnings start lower than natives' but grow faster over time, partly through acquiring country-specific skills
• C. Immigrant earnings will be higher than natives' from the moment of arrival
• D. Immigrant earnings will decline the longer immigrants stay in the host country

• A. Immigrants are less likely to be employed in any sector
• B. Limited host-country-specific human capital, such as language proficiency and knowledge of local institutions
• C. Immigrants face lower payroll taxes than natives
• D. Immigrants are more likely to work in high-paying managerial roles

• A. The tendency of immigrants to live together in the same neighborhoods
• B. Differences in economic outcomes between immigrant groups that arrived in different time periods, which can reflect changes in origin composition or host-country conditions
• C. The mandatory grouping of immigrants into cohorts for language training
• D. The fact that all immigrants arriving in the same year have identical earnings

• A. Census data never records the year of immigration
• B. Years since arrival and arrival cohort are mechanically linked in a single cross-section, so one cannot vary independently of the other without panel or repeated cross-section data
• C. Immigrants always answer surveys inaccurately
• D. Cohort effects only exist in countries without labor markets