Trump: “All Americans are hurt by uncontrolled illegal migration. It strains public resources and drives down jobs and wages. Among those hardest hit are African Americans and Hispanic Americans.”
There is some evidence that a small slice of the native-born workforce may see wage decreases because of undocumented immigrants competing for similar jobs, dragging wages down. Research shows that the negative effects are concentrated among workers without college degrees, who are disproportionately African-American, but also includes earlier generations of immigrants.
But in general, economists have determined that immigrants — undocumented or not — tend to help American workers by serving in low-skilled jobs that create more opportunities for the native born to move into managerial and knowledge-based roles. For example, a 2009 study by University of California-Davis economist Giovanni Peri found that a 1% increase in a state’s employment due to immigration produced on average 0.5% higher wages for each worker in that state.