As most I have only anecdotal evidence for border police differences. But I do still sometimes think about how it once took 4 hours of queueing with no toilet n

As most I have only anecdotal evidence for border police differences. But I do still sometimes think about how it once took 4 hours of queueing with no toilet no water and a sign that said no mobile phone use to get in to the US at Newark (after thorough passport examinations), while in Iran that same year there was no queue and a smile and a wave. I am a white Scandinavian.