Who says it has to cost anything? Make them pay their way back. They can clean sewers for free for all I care.
And no, they won't self deport, never have, never will.
We have to agree to disagree on some points. I think they will self deport but i will not argue your point.
We agree on the point about making them work but I think they should be put to work building the fence to keep their relatives out of our cou.try