Lol Americans don’t do harvesting. I’m from Iowa. They literally ship illegal immigrants in on busses to harvest, I’ve seen it first hand. Why I’m shocked any farmer would vote Republican, it’ll financially destroy most individual farms having to hire legal help

Farmers say they’re having trouble hiring enough people to work during harvest season, causing some crops to rot before they can be picked. […] The ongoing battle about U.S. immigration policies is blamed for the shortage. The vast majority of California’s farm workers are foreign born, with many coming from Mexico.

https://fortune.com/2017/08/08/immigration-worker-shortage-rotting-crops/

This is who is doing the harvesting.