Oooooooh no... Please, no. This cannot be seriously be happening...
Look, I know where American Psycho takes place. I was being a bit cheeky before, to make a point.
But I have to ask: what "race" do you think the guy on the American Psycho cover is, and how does that tell you where he's from? You may be surprised to find out Christian Bale is originally from the UK. So, not "America" by any standard.
Also, "attire"? Do you think there is only one country on earth where they wear a suit and tie? People wear that all over the world!
Seems to me, the main signifier of where the movie takes place is actually the word "American." Not that there is some white dude wearing a suit.