I came and worked at a university since March 2001. However, I paid the Federal tax in Jauary and Febiary of 2004.
Which form I should fill to get that part money back?
By the way, I applied I-140 for green card last year.
STP suggest that I fill the form 1040 and form 8833. How to fill the form 8833?
Thanks a lot to people who can help!