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question:

 

I am a us citizen married to a canadian. We lived in USA for 15 years and during that time my wife (canadian) had a green card and ssn number and filed married jointly. We moved to Canada in 2016.  In 2017 surrendered her green card. Up to this point I still file married jointly.  Should I be doing this?   Also would I qualify to economic impact for just myself of 1200 or as married for 2400.