From the aftenposten[1] article he was in the US last year, after the law was passed, with same passport and the same stamp and was not stopped or questioned about it.
I kind of agree. I don't know how the process works which is why I'm asking for someone more knowledgeable. But my current understanding is that is how it is done.
Or pretend to have lost their passport and get a new passport without stamp. Or get a secondary passport that's made available by most governments because of issues like this one.
But you are right in principle. Letting people through because they look important is a big security hole.
>Has he visited the US between that law passing and before Trumps ban without any issues?
Doesn't say much, as it only takes a random border idiot to get into that situation -- so you might, or might not, even if before you were coming in without issue.
[1]http://www.aftenposten.no/verden/Bondevik-hadde-iransk-stemp...