Lucrum, if he was not in Mexico how did the Mexicans arrest him? Do they have the ability to do that if he was on US soil?
Poor guy might have been confused with PTSD and you would hate to see someone made an example of, but i am guessing there is more to the story. Mind you, as a non US person entering the US the border authorities have always been pretty non friendly (I have a few personal stories of BS technical issues with friends) - maybe the Mexcians are thinking payback.
Maybe all the Mexicans crossing the border into the US got lost as well. (thats a joke for those with no sense of humour)
I don't know how much weight I'd give to whatever his mother has to say.
As to getting lost, it's most likely the lights.
