Do not have the time to address this now... however this subject is larger than the PD...
The reserve currency status of the US$ is more the result of central banks all over the world making agreements (not all of which local govts have control over).
Bankers, while they are necessary, are never to be trusted anymore than polecats.
Read: The Creature from Jekyll Island... it will start to open one's eyes.
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Romans Ch's 5-6-7-8
2 Chronicles 7:14