That's funny. If the USA asks the Belgian government to jump, they only ask "how high?".
A small example: all international bank transfers within Europe (through SWIFT, located in Brussels), are all sent to the USA. Because they need that stuff to catch terrorists. Apparently the US can (and have) even interceped money.
This used to be true but I do not think it still is. SWIFT opened a data center in Switzerland for the express purpose of not having to send internal European transactions to the US. They could be lying of course and still be doing it.
A small example: all international bank transfers within Europe (through SWIFT, located in Brussels), are all sent to the USA. Because they need that stuff to catch terrorists. Apparently the US can (and have) even interceped money.