Originally Posted by
GUWonder
NPU citizens' possessed ID need not be issued by an NPU country for the NPU citizen to exercise treaty rights to cross intra-NPU international borders. The authorities of these countries can rely upon references to the national population registers to determine factors relevant to legal presence/admissibilty criteria for NPU countries' persons.
What I meant is that a Swedish DL is a perfectly acceptable travel document between the NPU countries, whereas, say, a German or Louisiana one might or might not be, irrespective of the holder's nationality - I don't know.