> Many of the immigrant workers used on farms are treated like slaves, locked up when they aren't in the fields or kept in overcrowded housing without basic utilities.

While conditions aren't what most people consider comfortable, this is at best a major exaggeration. No, there aren't portable toilets out there (some farms do have them) - we'd go off to the side of the field, do our business, and get back to work. No one actively relieved themselves on any product. Most of us kept a damp towel around our necks for cleaning and heat relief, so that's what we would use. Every farm I worked on that supplied to grocers or sold independently had a washing/sanitizing system as part of the operation. So while it's not operating room clean, it's pretty damn clean by the time it got to the consumer. Also, all the mistreatment of migrant workers I experienced was only ever by other migrant workers.