To be fair, killing farming in the USA wasn't a difficult task. Most countries importing any American food products have had major restrictions on them for years due to safety and hygiene concerns. The EU, for instance, pretty much only imported some soy and grain, because anything else doesn't meet our quality standards. There only had to be a single minor inconvenience here to end the imports from the USA.

And in all honesty - wonderful news for Europeans. I don't think any of us will miss American products. Personally I'll happily pay a tiny bit more for soy from Brazil or China.