I strongly suspect that the need for bigger government grows exponentially with population growth.
If you want to keep the need for government to a minimum, today's massive influx immigration must cease.
In my lifetime I have seen America's population double, and our freedoms halved.
You are assuming they produce less as a group than they receive which hasn't been established. You seem to have a world view that the pie is limited and you will somehow get gyped out of your share. I disagree with this world view.