It’s bad enough they are unskilled. Below an IQ level of 83, it’s impossible to train them to do anything more than the simplest rote tasks. We’ve already exported or automated most of these jobs away, and many more will be lost to automation in the near future.
If ever there there was a time to curtail immigration, it’s now. We need to build more housing as it is, and get our labor participation rate back on track.
Nothing will happen until Jan 20, 2023 at the earliest. In the meantime we will have another 6 million illegal aliens, 3.3 million permanent legal immigrants, and another 1 million anchor babies. And add another million or so refugees/asylum seekers.