"Importantly, the research finds that immigrants revitalize less desirable neighborhoods in costly metropolitan areas, opening up new alternatives for middle- and working-class Americans to buy homes, and immigration supports the housing market without exacerbating the nation’s worst affordability problems, because immigrants themselves tend not to settle in the most expensive places."
Where do those existing residents in those working class neighborhoods go when immigrants move in? They get priced out and either end up homeless or on section 8, that's what happens. No new housing units in the low end ever get made, only the high end gets new builds.
See this https://www.newsweek.com/why-are-we-spending-millions-housin...?