we bring them in to build a tax base, but it's broken math - they barely pay their own way.
we need to be taxing the wealthy to pay for the infrastructure, and it's just going to get worse until we figure it out.
and, it's not complicated, either - more people means more infrastructure. we only refuse to see it because we're not approaching it the right way - we just want more and more taxes to pay the investor class with. and, it's going to collapse if a change in mindset isn't embraced.