This is why Trump is putting a big emphasis on Farming as part of the trade deals:

Re: AW: Re: discussion - U.S. ready to cut farm aid to push WTO freetrade deal

https://wikileaks.org/gifiles/docs/55/5542512_re-aw-re-discussion-u-s-ready-to-cut-farm-aid-to-push-wto.html

Clinton: Don't cut farm aid for Africa

https://wikileaks.org/gifiles/docs/30/3086673_-os-utf-8-q-us-africa_-_clinton-3a_don-e2-80.html