There is an option for enforcement you're not realizing here, called the Commodore Mathew Perry method, it goes like this. --Location: Tax Havens--

>Knock Knock Its the United States

With huge boats, with guns, gunboats.

>Open your banks' records, stop having them be closed

and theres not much they can do about.

So they sign a treaty making sure their banks' records are not closed.

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Inspired by this, both historically and in delivery https://youtu.be/Mh5LY4Mz15o?t=4m46s