If you have a society with robust social welfare systems - education, healthcare, social security, pensions, childcare, housing etc. etc., mass immigration becomes a massive problem.
Everything is taken care of via taxes, and those taxes come from a productive working population. Slow population growth (whether from births or immigration) allows social institutions to expand at a matching rate over the decades.
Rapid population increases from migration can overwhelm the systems in place and put society in a spot where it is no longer able to maintain them.
Furthermore, when it comes to illegal immigrants, it gets doubly bad. They can’t hold down a legal job (at least in my country, and thus not pay taxes either), which inevitably pushes them towards crime or illegal jobs which brings a whole host of other issues.
If you have a society with robust social welfare systems - education, healthcare, social security, pensions, childcare, housing etc. etc., mass immigration becomes a massive problem.
Everything is taken care of via taxes, and those taxes come from a productive working population. Slow population growth (whether from births or immigration) allows social institutions to expand at a matching rate over the decades.
Rapid population increases from migration can overwhelm the systems in place and put society in a spot where it is no longer able to maintain them.
Furthermore, when it comes to illegal immigrants, it gets doubly bad. They can’t hold down a legal job (at least in my country, and thus not pay taxes either), which inevitably pushes them towards crime or illegal jobs which brings a whole host of other issues.