Seriously. You don't think there's anything wrong with him becoming a US citizen in 1998, making 3.5 billion dollars over the next 14 or so years, and then giving up his citizenship just before he's about to cash in to try to avoid paying taxes on that money? Seriously?? Seriously????
Please explain to me how you, or any other US citizen of your choice has more right to HIS money than he himself.
You are acting as if he lived in the US for free, got free education and then someone handed him over a business worth billions (for free as well of course).