Earlier quoted context omitted.
I'm merely guessing, but seeing how the law takes a backseat when security and anti-terror are involved I suppose that EU governments and the US have reached some sort of agreement about which set of laws to enforce in certain cases.
My guess is that such an "agreement" would have been reached by one side only... The law has been taking much less of a backseat in Europe when it comes to security and anti-terror. Also I find it hard to believe that the EU would just give up its data protection laws just to please Americans and allow the enforcement of an American law.
Which is possibly preferable for every US-company which thus do not have to challenge your agencies.