It has everything to do with US regulations, because Bitstamp deals in USD, and has many US customers. It would have to drop all of them, if it were to decide not to submit to Big-Brother Central regulations.

Secondly, if you look at the Bitstamp TOS, you won't see Slovenia mentioned. You will see that they are subject to UK England laws under Regulation and Jurisdiction sections.

Furthermore, it says that "The Services we provide are currently unregulated within the UK." So, if they have no regulatory pressure in the UK, they would not have announced verification right after the Bitcoin Foundation meeting with the Washington regulatory cabal.

And please, no nonsense about how that was just a coincidence.