The Berg family, as dedicated anti-Bush people, would have reason to aid agents within the U.S (prior to 2001) working against this administration. Nick or more likely his father, gave aid to Moussaoui with the net assistance. Are there deeper connections? Who outside the family can say? But it is very possible that Nick was in Iraq for reasons other than tower repair work.
That the seditious Moore Pig interviewed Nick is not so surprising since the Moussaoui connection was a known fact while Pig was putting together his anti-American film. That Nick chose to stick around in a dangerous country where he stuck out like a sore thumb as he traveled adds to the data we may contemplate ... if one is a friend of the bad guys, there is no fear that travel will expose him to grave dangers from the bad guys and he knows there is no insurrection from those friendly to the US in Iraq.
Nick, as a willing accomplice to some extent, became a pawn in Zaqawi's designs and Nick's father cannot bring himself to admit that his trist with evil has gotten his son killed, so Mister Berg lashes out at the only focus he can allow himself to have. Moore is a whore to exploit this twisted scene, but that is par for his ilk of socialist societal engineering bastards. The democrat party leadership is full of the same sortr of seditious goons.
Moore acts as if he's going to get away with all this that is what is so annoying.
I think the Michael Berg + International ANSWER + Michael Moore connections hold the key to this mess. International Answer dropped M Bergs name off their roster sometime after the roster was posted here (or just after Nick's beheading broke). Then, they had various media shills aggitating (trying to intimidate, IMO) about Free Republic being responsible for his death by publishing the list of names. Smokescreen.