Nice thought, but it wouldn`t work. The US is one of only two countries in the world that taxes their citizens on income they earn while living overseas, and the US policy on giving up your citizenship assumes that the only reason most people would consider it is to get out of paying taxes. So, when you give up your US citizenship, they still tax you for (I think) about 6 years.
Guess I keep working and being all patriotic and stuff then.