You are making this black and white.  Humans don't work that way. All of them want free apartments.  Many of them are not wiling to live in public dormitory style shelters.  America had rent controlled apartments for disabled and elderly.  Those have been so full for the past 5 years that many of them do not even keep a waiting list anymore. I dont know if illegals can fill them, but the one a family member lived in became filled with legal Russian immigrants.