Dunn remained an American. But he was alarmed by a change in U.S. law requiring those with more than $2 million in assets to pay an exit tax if they gave up citizenship. He didn't have $2 million. But his wife was doing well enough that he imagined one day they could get there. The idea of the U.S. government taxing his Canadian wife's money didn't seem right.
"When I learned about that, I decided that to protect my wife, I better expatriate," he says.
When the team's owner suggested last year that he join Taiwan's national team, Davis says he found little motivation to keep his U.S. citizenship.
"When you think about who I am as a black guy in the U.S., I didn't have opportunities," he says. "You get discriminated against over there in the South. Here everyone is so nice. They invite you into their homes, they're so hospitable. ... There's no crime, no guns. I can't help but love this place."
Many others cutting their U.S. ties say tax laws drive decisions that have nothing to do with secreting wealth.
"I wish I were wealthy," said Nelson, who says she takes in about $50,000 a year from pensions and earnings from publishing an online journal covering credit union news.