Ugh.... Scary as Hell! It feels like being in a room with all the walls closing in!
Hypothetical question (unless I missed something here): I'm a US citizen and an Argentine permanent resident (all papers/documents/etc. totally valid and won't expire for several years). If/when I need to travel back to the US, if I have a family member back home in the States (with only US citizenship, absolutely no connection or any legal ties to Argentina in any way whatsoever) purchase a plane ticket for me using their US credit card in my name leaving from EZE, would the 20% charge apply to my family member's purchase?
... I guess that even if the consensus is "yes," I can't hold my breath at this point that even that little luxury/loophole will apply in the near future