People would vote with their feet, too, except they're heavily penalized for doing so. If you renounce your US citizenship there's a one-time tax of 40% of you

People would vote with their feet, too, except they're heavily penalized for doing so. If you renounce your US citizenship there's a one-time tax of 40% of your all your US assets and the US claims the right to tax you for the next ten years. Subjects, not citizens.