They have legal green card workers from Mexico. The pay for the airfare and other costs to bring these (mostly long-time) workers into the country and then send them home over the winter. They provide furnished rental houses in the area for the workers. These are all comparable to the other homes in the area. The have a chef on staff and this chef is responsible for a huge gourmet lunch every day. The owners eat with the workers. Some of the longest-term workers are considered family by the owners and vice versus.
We asked them if amnesty effected them. The answer was “No!” The workers like the arrangement. They like their homes back in Mexico. They can’t wait to return to their families over the winter. They enjoy their work and their summers here.
There is nothing as permanent as a temporary guest worker. They will drop anchor babies and many will put down roots here. What? You think illegal aliens never lie to naive Americans? Huh?
You are unaware of the millions of Turkish guest workers who never left Germany to return home And dittos for other European nations.
At least have these alleged guest workers put all earnings into a trust account that they don't get one peso from until they (verified) return to Mexico. Mexicans are too dicey anyway. I would bring Thai's over. Much more likely they would go home due to not having millions of Thais (community) here to disappear into.
To my knowledge, none of these workers have done as you describe. Such people would be extremely visible out here. I do know of a large family dairy and livestock operation that employs legal husband and wife teams. Usually, the women work in lighter areas of the operation. The kids spend the summers at home with relatives. None of them have stayed, AFAIK. Again, this is a sparsely populated area that is 99.8% white, maybe 3/4 of the people here are generational residents who are intricately intermarried and interrelated. Everyone knows everyone’s business. This legal green card worker program has been extant for over 20 years, here.
There is a large Hmong population in the nearest city of ~50k. A few have farms, but they are not organic, are strictly family operations and are known to be resellers of produce from other areas, along with their own.
There is a Hmong underclass and Hmong gang problems. There are also many Hmong lawyers and medical personnel. They are entrepreneurial and tend to stick to their own, rather than work for others (even the criminal elements). I have never heard of an Asian farm worker who isn’t working within their own extended family. Also, I have known some local Americans who married Thai wives 50 years ago, but moved away, as the wives preferred suburban life in places with more Thais. One man lamented to us that his Thai wife was insufficiently entrepreneurial. In his opinion, the Vietnamese women were the go-getters.