It depends.. go through the following link.. http://www.irs.gov/taxtopics/tc854.htmlNadi said:If one becomes a naturalized US citizen .. and goes back to India to work.
He gets paid in India in INR. Does he still have to do US taxes ?
but most of the time I dont think you would have to. UN or rest of the people can give you a better picture since I am not in the Tax area..