I entered US in 2016 with a J-1 visa, having US and foreign income during 2016 and 2017. During 2016 my wife did not have US income so she was considered as well non-resident allien and we filled taxes separately. SInce se has worked in US during 2017, I understand she is considered now as resident alien because of her J2 status; and we have the possibility of filling together (being considered both of us as resident aliens, therefore including worldwide income; but I understand with higher deductions) or filling separately (my wife as resident alien, and me as non-resident alien since this is my second, and last, year I can be considered as non-resident alien for tax purposes)
