When we had a frontier, we had a surplus of habitable land and resources and immigration was a quick way to make the most use of it. That's over now, and we're

When we had a frontier, we had a surplus of habitable land and resources and immigration was a quick way to make the most use of it. That's over now, and we're spreading the same wealth among more and more people. An migrant worker creates less demand than a native doing the same job, because they're trying to live austerely and remit as much of their income as they possibly can out of our economy and back to their family's. They aren't building out water and power homesteading our uninhabitable scrub, they're living ten to an apartment near the few jobs.