@anna38 , since you say you both have Green Card, you ARE permanent resident of USA and therefore subject to the tax rules just as if you were a citizen of USA ( unless of course you have relinquished your residency officially). Therefore I do not understand why the US pension administrator issued you a 1042-S --- they should have issued a 1099-R. What am I missing here?
You say you became residents in 2020 ( your Green Card was issued in 2020 ) or did you mean that you became a resident for tax purposes by meeting the substantial presence test ? When did you come into USA ? From which country ? when did you get your Green Card ? Are you both with Green Card? Are you retired ? Some of these answers may help clarify the situation --yes ?
