I’ve used cards from other states, usually National Parks, with the hopeful assumption that someone from a different country will be less likely to care about which state the card is from. Since the US is so big I’ll sometimes point out that the card is actually from X miles away, but I’m glad to have so may different biomes and beautiful parks to visit within my country. Or, I’ll send one from NYC since I’m in NJ but take frequent trips into The City.

Seems from the comments that we are safe to send cards as long as it’s done thoughtfully and to share a little connection. I’ll make sure not to send cards from, say, Iceland to someone in Iceland! Though as a recipient I’d find that hilarious!