As has been written about here repeatedly, returning US citizens routinely get asked intrusive questions (with the least intrusive being how long have you been gone, where have you been?) at US passport control.

My experience as a dual US/EU national is that when entering the EU with my EU passport I am never asked anything other than an occasional "how are you"?

So, my question - is the US unique in routinely asking it's own citizens questions at passport control? When I say "passport control", I would also include customs in other countries, as in the US the passport guy seems to also perform a customs function and steer people to secondary.