Bank to bank transactions seem to be pretty much a wild west after you leave 1st world countries, like the US, assuming that there are limited treaties between the two countries, etc... The only reason why these major "bank hacks" (different subject, but just sharing) work is because you can transfer the money out and liquidate without real issues (until you get caught for whatever reason).
I could have been more specific but in any case, that's not particularly relevant given the fact that taxation is significantly more favorable there compared to other principalities, territories, et. al. of the US.
