[antiRepublicrat]

In the first quarter alone, 499 Americans expatriated through the IRS, meaning they probably won’t have to pay U.S. taxes anymore

If the IRS thinks you moved to avoid taxes, they will still come after you. It's only a matter of enforcement where you're now living, but don't dare set foot back in the US or an extradition-friendly country.

[1rudeboy]

I believe the IRS is entitled to assume that you renounced in order to avoid paying taxes, and I think they keep you on the hook for ten years (after you renounce citizenship).