Olasek, you are clearly not familiar with what has been happening, but numerous US companies trading in Europe have been playing fast an loose and flouting tax regulations. And if you have a look at the GA field, you'll see hundreds of US registered and operated aircraft in the EU dodging the regulations. This wouldn't be allowed the other way around, but if the EU governments and authorities clamp down, the US cries foul.
It is not the US's protectionism that winds others up - governments should protect their industries and businesses - it's their hypocrisy.