Recently, a fan * nicknamed Ahmed15252 shared his experience with the Iraqi customs service.
He claims that upon entering the country, they seized the Expedition 33 artbook (it was part of a special edition):
My "expedition journal" that came with the Monolith set was detained at customs because they decided it was a "possibly ancient artifact." Customs officers opened the package and decided that the artbook looked too old. Well, you know — drawings, symbols, and stuff like that.
Ahmed15252 also published photos of documents to confirm his words:
As a result, the artbook was officially sent to the Iraqi Museum / Technical Committee to confirm that it is actually a modern artbook based on a video game, and not a recently discovered artifact of an ancient civilization.