Yes, machines do do the milking. But someone must wash the cow crap and dirt off of the tail and back end of the cow. Then the cow must be put in place, restrained, for another worker to hook up the suction to the teats. The the cow has to be lead away. All of this takes people. And everything must be kept clean. There is an expensive robotic milking machine, but even that needs people to direct the livestock, though I could envision a auto cow washer...but who is supposed to pay for all this hardware. Cheep migrant labor gives you cheaper eggs and milk. American dairies are going under and dairy farmers are dumping milk, and committing suicide because they can't compete with Canadian subsidized milk production. The US has refrigerated warehouses full of cheese (they give it away to SNAP card holders for free - makes the BEST grilled cheese, baked cheese and mac, and crabmeat au gratin) made as a way to subsidize US daries. You want to pay $6+ for a gallon of milk, pay a living wage to non-farm family workers to keep the place clean and your milk safe.
