The EU doesn't import US beef because of banned chemicals used to raise US cows. Imagine if the EU implemented more stringent requirements on, say, GM foods. Or

The EU doesn't import US beef because of banned chemicals used to raise US cows. Imagine if the EU implemented more stringent requirements on, say, GM foods. Or other livestock. Banned the pesticides used in California Oranges, etc. Trade agreements, tariffs, standards and sanctions - there are many ways for European countries to damage the US economically.