First off, that's what immigration control should be about. Never letting ignorant unskilled people enter. If you do that, you can just kiss your social services good bye because regular people who were born here will have a lower quality of social programs. I could get right to the heart of the issue and just say, end all social welfare programs as the drain on society they are. That's one draw to mass immigration that should end. Second, since we have these programs anyway, it should be illegal for any aid to a non citizen. I'm including legal residents who are not citizens. If they came here to work and got a legal work visa, then fucking work or go home. If they came and end up without a job, the visa is void and go home. In a sane country every single person there who didn't get permission to enter and bypassed customs by any method should be rounded up have all their stuff seized, bank accounts closed out and money seized, cars seized, etc. You get the idea. And their kids they had while here, also deported as they are not natural born citizens as they are offspring of illegal aliens. A child inherits their parents status. Then go from there. You want to worry about being replaced, you go to the source of the problems.