I recently read "Treasure Islands: Tax Havens and the Men who stole the world" and can't recommend it highly enough. It shows that tax fraud and offshore banking is despite propaganda that "it's dead" very much alive and the US is a central player now. Hollywood still uses Switzerland and the Cayman's but a lot more convenient are setups involving Nevada, New Mexico, etc.
Offshore banking is a key component in maintaining control when an empire retreats/collapses. The French installed puppets in Gabon who let them launder their money until today in a similar fashion that the City of London and the more reckless jurisdictions (BVI) allowed the Brits to keep their loot which they stole in the past 200 years.
we had a chance to burn all this to the ground during the financial crisis but Occupy Wallstreet was just a "leaflet campaign" without teeth. You don't fight a real enemy that subverts the rules of democracy with democratic tools.
https://en.wikipedia.org/wiki/Treasure_Islands:_Tax_Havens_a...