If you started doing that, you'd have to accept the fact that unknown billions of dollars from all the other political whores around the world that have stuffed their ill gotten wealth in banks all through the Bahamas, Panama, Delaware, Switzerland and elsewhere. Then there are the global corporate execs and aristocracies that hide dirty money for dirty deeds.
Shit...
There's probably more dirty money in well concealed financial holdings around the world than legit money in well known civilian banks.
I'm convinced that is why these "people" are NEVER held accountable, because once one of them falls and is exposed, the door opens and the emperor realizes he's not only naked but has been ruffied and raped for decades.
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