>>510710452 (OP)Let's talk about apartment vacancies. The average rental vacancy for habitable rental units is 5.94% per year, that means that on average, only 5.9% of viable rental units for human shelter are available to any given person in need of them. Of course the averages vary by state, but the general situation in the entire country is that there are not that many available units.
You have to fill out an application and there is a process to being chosen by a property management company or landlord as a viable tenant. Not everyone has the right to be a tenant, being a tenant is a privilege. You don't have the right to housing in the united states, you have to pay your rent and you have to be someone that people are okay renting to.
Unfortunately a lot of landlords and property management companies are completely fine with sheltering illegal immigrants, or they don't check their properties to make sure that a legal citizen isn't allowing a large number of illegal immigrants to stay in a unit. Of course these situations vary by county, by city, by state, but this is a problem. Especially for young American's that are seeking affordable rent prices.
Older Americans are generally home owners, young Americans are generally renters, so the vacancy rate is a problem that specifically affects low income young American citizens. It's also true that younger Americans generally make lower wages than older Americans due to lack of skill and experience, although there are exceptions to these averages.
Seeking shelter is a competitive environment in the U.S, contributing to homelessness. This a problem, in part, due to someone else being an immigrant.