[marrington]

As a U.S. citizen, if I make the choice not to interact with the U.S. economy and move somewhere outside the U.S., I still have to give the government their cut. Only way out is to relinquish U.S. citizenship. No other developed country requires this.

[Avshalom]

So relinquish your citizenship.

[chimeracoder]

Aside from the fact that there's a hefty fee for that, the US government will not let you relinquish citizenship solely for taxation reasons.

You could make up a reason, but that's stretching even your definition of "voluntary" under the law.