Thejohnatvu said:
I have a valid US driver's license, but that is useless for the AFIP bc I need some certified document explicitly stating I am a legal US resident. I am pretty sure any US citizen (even if they have not set foot in the US for 20 years) is a legal US resident bc they have the potential to RESIDE in the US at any given time.
You're confusing right of residency and legal status as resident. Just because you have a passport, citizenship, or a Permanent Residency visa does not mean that you are actually a resident of that country. Legal status as resident comes down to taxes paid and number of days in the country -- which is what ElHombresinnombre was referring to.
If you're spending 7-9 months a year outside of the USA, congratulations, you're not a resident of the USA! I believe to retain residency is 181 days in country -- you'd have to ask a snowbird (The Canadians that go down to Florida every year). they have it calculated out perfectly, making sure to spend just enough days within Canada to qualify them for residency status which allows them continued access to pensions, disability, medical services etc without having to change their residency status.
Don't panic though, before I got my residency card in Argentina I always filed my taxes as a resident of Canada, despite being out of the country 95% of the year. Once I got married to a local though I no longer had enough ties to Canada to be able to prove residency status there, so I no longer have rights to social services there (ie maternity benefits, unemployment, disability etc)
Which reminds me, resident status (at least for taxation purposes) is evaluated by showing that the larger portion of your life is tied to one country or another -- ie you have more property, investments, bank accounts, driving licenses, family etc in one country than another. This is why although I still have ties in Canada, because I'm married to an Argentine and reside here the majority of the time, I'm a non-Resident Canadian. I had to give up my medical services card, I'm supposed to give up my driving license, and I'm also supposed to give up my bank cards -- however I've been with the same bank for 20+ years so they said they have no problem with me keeping my account.