No matter. You just don't show up in Iraq without credentials, connections and a plan.
And when he was held by the Iraqi police, all he had to do was say he had a relative to vouch for him. Check out the relative!
Then think about Berg's email (early January) at Yahoo finance groups provided by Mark Humphrey: "I am taking photographs - where allowed." Why would he even have to add the "where allowed". Me thinkest thou protest too much.
According to Mullen et al's web site, they / their president may have had a role in that conference. I know they were involved in at least one major such conference. Also, I believe they are involved in some major clients who are doing work over there.