You can’t just start growing something else. There is a lot of infrastructure that has to come with every crop. Ever wonder why some area grow say, sugar beets and another doesn’t? It has to do with the demand, the buyers, and the methods of getting product around. You are talking of millions, if not billions to change an area, and the demand just isn’t there.
For the last handful of decades it has been beans and corn. You can’t just change over night. And once China stops buying from the US, it will all be sourced for South America.
So a lot of farmers are looking and bankruptcy in some very red states that are being actively campaigned in by Dems.
Then the government needs to help them during the change over. If China want to buy from somewhere else let them. Those farmers have not been growing soy beans forever. China will be back and if they are not the farmers will grow something comparable. I have no problem with helping them during the changeover