My wife was in USA from 2015 to 2018, and we filed joint tax return for those years. She moved to Switzerland in mid 2018. As I am a resident alien (on a non-immigrant visa) and she has a SSN (and can be treated as a resident alien), I continued filing joint tax returns for the years 2019 and 2020 with disclosing her income and tax information in Switzerland. She recently got a dependent visa in 2021 for occasional travel, but still residing in Switzerland.
Should I continue to file joint tax returns? Do I need to do any ammendment?
