I have been married since 2020 and I have been filing married filling separately due to my wife not having SSN and also non resident of the United State of America. I also got a son in 2021 and he also has no SSN. I have been doing None alien resident (NAR) for their SSN. Now that they are both here in the U.S and both have SSN, Can I amend my taxes for the past three years from married filing separately to married filing jointly and get a higher tax bracket. Can I claim my son and received some credit or get refund back?
