Entry into Russia was horrible the first time I went there.   You walked up to a box and the slammed shutters closed in front and behind you as they reviewed your passport (Which they kept)
When I went to England, the trip into the airport past customs and immigration was so casual I couldn't believe it.  There were a couple of immigration officers supporting a wall and gossiping about the women passing by.  You walked past them, that was immigration.
You come into the states, you just get asked a couple questions, and in you go, mostly.  Those with US passports got done in 20 minutes to empty a whole 747.
Of course, I haven't travled overseas since 1994, so I understand it is a different universe now.
But I do imagine attitude gets responded to.   I am always polite, unlike Debau2003