Honestly, I think he did move to Singapore to avoid the taxes. For the past 3 years he was no doubt earning alot so instead of going back to Brazil, why did he pick Singapore? Singapore have very low taxes
Well, that's because he's a peasant.
Now, if you're Merkun Royalty, like Charlie Rangel, you just stay in New York and EVADE the taxes. If they catch you, you'll get a slap on the wrist, and Boner will still come to your official Congressional portrait unveiling.