Comment: Not only that, but there is

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Not only that, but there is

Not only that, but there is the matter of an exit tax before you are allowed to leave:

"In 2008, Congress enacted the Heroes Earnings Assistance and Relief Act that imposes a penalty—an "exit tax" or expatriation tax—on certain people who give up their U.S. citizenship or long-term permanent residence.[28] Effective June 2008, U.S. citizens who renounce their citizenship are subject under certain circumstances to an expatriation tax, which is meant to extract from the expatriate taxes that would have been paid had he remained a citizen: all property of a covered expatriate is deemed sold for its fair market value on the day before the expatriation date, which usually results in a capital gain, which is taxable income.[29]Eduardo Saverin, a Brazilian-born co-founder of Facebook, renounced his U.S. citizenship just before the company's expected initial public offering; the timing prompted media speculation that the act was motivated by potential U.S. tax obligations.[23]"