Speaking as a Canadian, I’m confused. If you boot out all the undocumented, where are you going to find the migrant workers to do all the unpleasant, if not downright dangerous jobs? And many of those are in red states. What does that leave? The convict workforce? I guess that is huge in the US.

We have migrant workers here too. They come on temporary visas, so they are technically documented. But the whole sector is rife with discrimination and human rights violations regardless.