I'm not a lawyer, but this seems plausible. Singapore doesn't have a comprehensive tax treaty for the USA[1], which would otherwise prevent double taxation. [1

I'm not a lawyer, but this seems plausible. Singapore doesn't have a comprehensive tax treaty for the USA[1], which would otherwise prevent double taxation. [1] http://www.iras.gov.sg/irasHome/page.aspx?id=812 http://www.iras.gov.sg/irasHome/page.aspx?id=812