It is not a threat.
It is economics.
The reason we have the fattest poor people in the history of the world is that we have the lowest cost to produce that food.
Right now, the biggest input is labor.
Labor that is done by illegal aliens.
Go to any packing house and look at the signs. Most are in Spanish, though you are seeing Swahili and South American Indian dialects now also. Why? The companies go to a village and bring them over. Then they make sure they don’t speak English and limit their contact with the rest of the area. Saw it happen a lot as a kid, till enough learned English and their kids hit school.
It is slavery, and I hate it (one reason I oppose illegal immigration) but that is why a dozen eggs costs less than a buck and hamburger is cheap.
If you force companies to hire legal employees, the cost will be pushed on. The losers will be the farmers, who whose costs will go up but will not be able to pass it on to the packers.
BS. Cheap sugars and carbs. Exporting the American diet increases fatties all over the world.