This has been going on for quite some time but the pace is now accelerating greatly.
http://www.actionamerica.org/taxecon/ticktick.shtml
Didn’t make it through the web page you linked. He needs a cliff’s note version.
This caught my eye
“In 1981, the Reagan administration rolled back some of the success-punitive, anti-privacy laws and tax rates that were contributing to this exodus and indications are that it did have a significant effect. In fact, officially, not a single US citizen renounced his US citizenship the next year.
That statement deserves repeating.
Not a single US citizen renounced his US citizenship the next year - not one.