Suggest your company should look in to this for you, this could get complicated. But I think as you are in US you are bringing earning in to that country regardless of where you are being paid from.
Also depends how long you spent in each country as I am not sure whether there is the 183 day rule for US
Also you may have to pay tax in both countries in which case Singapore tax would be the lower option I think.
This needs advice from the relevant tax authorities in both countries.
[This message has been edited by Batwoman (edited 11-10-2002).]
[This message has been edited by Batwoman (edited 11-10-2002).]