Okay, let's summarize, this foreign dude, in his own country, sent email to an American manufacturer asking if he could buy parts.  Of course the dude on the other side of the world did not know details on American export restrictions as proven by the emails to the manufacturer with his identity clearly exposed.  In response, a federal agency sent an agent half way around the world pretending to be a broker who would sell the parts to the dude if he came to the US to pick them up.  The dude does not see an obvious problem with this at worst assuming that export restrictions are just minor infractions as most people think about such things.  He comes to the US and is arrested and will now face years in US jails.  Meanwhile, his family and employees suffer.  There is no evidence in the story to suggest that the dude would have acted in any way after being told by the manufacturer that he could not buy the parts.  Wisdom?