Final answer:
Immigrants often end up in precarious jobs due to a lack of education and skills, leading to lower wages and competition for low-skilled jobs.
Step-by-step explanation:
Immigrants often end up in precarious jobs as a result of their limited education and skill set. About one-third of immigrants over the age of 25 lack a high school diploma, which makes it difficult for them to secure higher-paying jobs. As a result, many immigrants end up in low-skilled jobs like restaurant and hotel work, lawn care, and janitorial work. This shift in the supply of unskilled labor leads to lower wages for these jobs, benefiting middle- and upper-income households who hire these workers, but negatively impacting low-skilled U.S. workers who must compete for these jobs.