Thing is, they come from nigeria... That's what a slum in nigeria looks like https://duckduckgo.com/?q=nigeria+slum&iax=images&ia=images That's what a slum in china looks like https://duckduckgo.com/?q=china+slum&iar=images&iax=images&ia=images I mean, even if a slum is a slum, it's still better in china, compared to nigeria ... You're dealing with bottom feeders, prison in the west for them is often a much better environment than being free in their homeland, that's the fucking paradox Nothing short of physical removal will work, as in you put them in a cargo, like you would do with any commodity, and you ship them away, and that's it. That or you shoot them... They will stay as long as they physically can, there's no way around it. One because they often don't have the means to go back, or to go anywhere else, and also because compared to what they have known it's bad but not worse, so it remains a good deal overall