I don't have the details in front of me, but if one has "lots of money", the U.S. gov't. takes a cut when one renounces their citizenship. Even on the way out, Uncle Sam doesn't miss an opportunity.
So not only are we becoming socialist in regards to taxation and regulation and bureaucracy we are economic prisoners as well?
If you have a net worth greater than $2 million, you are subject to paying taxes as if you had sold your assets... in other words, any unrealized gains are taxed as if they had been realized. Most, probably at long-term capital gains rates.