What I have heard, is that he travelled on some type of emissary passport that was granted by Congress. I don’t know if that’s true, but it seems to a well-known fact.
Remember in the last debate, and McCain said to Obama regarding the free trade pact with Columbia, something along the lines “you have never travelled south of the border”. 0 gave him a really peculiar look like a “touche” kind of look. It just seemed like an odd moment to me, maybe nothing to it but strange . . .
Well, if Congress granted him an emissary passport that should be well documented along with the signature of President Bush.