brazil is also a major ag exporter and trump set them up with a trade deal in term one. chile and argentina are also important because they give us fresh temperate climate fruits off-season, and increase our fish supplies (argentina giving us the right to splash chinese fishing boats in their eez would be amazing). fortress america with the commies booted out is capable of pure autarky in a pinch - moreso if japan, korea, australia, and new zealand are in the mix.
United States