They offered him a plane ride, he said no.
"Officials said the U.S. government warned Berg to leave Iraq, and offered him a flight out of the country, a month before his grisly death." CBS
"Nick Berg, the US hostage shown being beheaded by Islamic radicals, was held for two weeks in Iraq at the FBI's request for travelling without documents while his identity was checked, a US general said on Thursday. "Berg was in Mosul. He was travelling alone. The Iraqi police found him without any documentation. Iraqi police was suspicious and took him into custody" Brigadier General Carter Ham, who heads the Olympia Task Force, said in this northern Iraqi city. "FBI asked (police) to keep him until they knew who he was" Ham told journalists." News24
so a month before he was detained, the FBI knew who he was, and a month later they didn't know who he was, and had to be interviewed 3 times by them? yeah, makes sense.
i suppose they offered him a trip to disneyland too?