The people whose monies have ever made a loop through the US financial system are likely to find any of their funds within the US or its banking agreement signatories seized. Not all of them, but enough to cover the taxes that are being sheltered. Having looked over the list, most of the people getting busted are the ones that don't have any money going through the US precisely because of the Bank Secrecy Act. It'll be interesting to see how it shakes out. Because there are so many countries involved, and because everyone is going to have their own spin on it, I don't really know how it's going to matter... I'm actually not optimistic that much will change, but I imagine attempts to loosen US banking laws are not going to go through as easily.