I am an Indian citizen living in the US since 2008 with an F1 Visa. I am a resident for tax purposes. Can I claim exemption under the India US Tax Treaty (21) "Students and Business Apprentices From India"? So Do I have to file the 1040NR in spite for being a resident alien for tax purposes?

Could anyone site me IRS publications which clarifies this? I am looking through p519 and am lost :-/