Originally Posted by HDQDD

One question: Which passport did he present when he checked in originally? If he presented the Argentinean PP, he should have been fine. If he used the US one, I can see where the confusion sets in. I'm not excusing it, but all parties could have handled it better if that's the case.

I don't know the legality of checking in with one PP and then trying to use another for entry... That seems shady and wouldn't match the pax manifest PP info that's transmitted to Brazil...

Pretty Impressive to have Chairman's Preferred on United, since that's a USAir status...