I entered the U.S. on a student visa (F1) in 2012. I got my green card just this week. So, my status has changed to a permanent resident. I am trying to figure out whether I should fill a non-resident or a resident tax return for year 2014. I was on non-immigrant visa the whole year but currently I am a permanent resident and here is the confusion. I would appreciate it if anyone can be of any help.