[Chode]

this is bullsh!t...

if you renounce your citizenship which he did last september, and are worth $2 million or more, your total assets are treated as if sold the day before expatriation, and tax is due on the assessed market value

that would include his Facebook shares

[TexasFreeper2009]

anyone with half a brain who planned on doing this would have been quitely shifting assets out of the US for years to avoid such a tax.