:::Sounds like a great plan. Foreign governments are obviously reluctant to take a stance of their own regarding the passport card, which I find strange, not least seeing as when it comes to Swedish ID cards (admittedly not as powerful a document), the CEFTA states and Georgia explicitly accept it even though Swedish border police will not allow you to leave directly for a non-EU/EFTA country with one. Hence the funny situation that the route Sweden-Romania-Serbia-Sweden can be flown, but not Sweden-Serbia-Romania-Sweden. 
 :::In contrast, here foreign countries seem to go by this possible artificial restriction by the Irish government, which is what I find highly contradictory