Hi.
I am employed in India and have been transferred to Chicago on L1A visa.
I need to file returns in India and also in USA.
I have been told that all the tax filed in USA can be received back.
Please assist in understanding the correct law.
Thanks.
Priyamwada.

When exactly did you come to the US? Are you married?

I am not married. Staying alone. I came to USA on Oct. 3rd, 2010.

you are a non-resident alien for 2010 and would need to file form 2010NR or 1040NR-EZ. You only need to report your US source income as a non-resident alien. There is no guarantee that you get all your taxes back, you are also subject to social security and medicare. REad the instructions for form 1040NR for possible deductions.
http://www.irs.gov/pub/irs-pdf/i1040nr.pdf
http://www.irs.gov/pub/irs-pdf/f1040nr.pdf
http://www.irs.gov/businesses/small/international/article/0, id=96477,00.html