You kick them out with a boot. They are here illegally; have gotten benefits illegally; and, will return to their own countries better off than if they had never been smuggled in or born as an “anchor baby”.
I totally understand but what if that happened to you and your parents were french and you were 1 year old. They died so you are sent to France.....how would you survive now at age 18? I am against illegal immigration but there are some interesting concerns to be looked at.