but machinery does most of the work

And that is the rub. Most of the people you see complaining about how much this will affect farming are cheapskate sacks of shit who never invested in the equipment to make their operations more effective and then made up for it with cheap slave-like labor.

I remember back in Trump 1.0 there was a farmer from Idaho who got national news attention because he was talking about how he had had a large part of a crop of asparagus rot in the field because he didnt have enough workers to pick it and the Media at it up and ran with it. What got less traction in the Media was the farmers who came out after the fact and pointed out that it was very much a him problem, because they had all mechanized their operations and gotten their harvest in with time to spare while he was scrambling to find people willing to work for minimum wage (or less) instead of investing in machines, then blaming everyone else for his problem.

And I guarantee you there are many such cases across the board.