It's tricky, but no trickier than their accounting system ;) Google EU has a mission to "provide Google US with data hosting, and send profits back to the moth

It's tricky, but no trickier than their accounting system ;) Google EU has a mission to "provide Google US with data hosting, and send profits back to the mothership". They have a contract, in which Google US grants free use of any code data that Google EU needs. Google EU has a strict constitution, which prevents them from disclosing data, even if Google US wants them to. This clause in their constitution states that it cannot be changed. If that's too extreme, they could allow the information to be released, but only if cleared by some specific third party. That's just a rough idea. I'm sure Google's lawyers could come up with something much better.