I believe I know where this guy could be hiding. He could be in one of these safe houses designed for illegals crossing the border.
Inside the small solar-powered structure migrants can find water, some food and a touch screen. Drawing upon traveler graffiti, pictograms, and the Mexican tradition of ex-voto painting, migrants are invited to use the interface and share something about themselves and their journey with the homeowner and anyone who's interested. Migrants can either draw, write messages, or make a pictogram from ready-made graphical icons.
The only thing that's missing is the vending machine for the fake drivers license, social security cards and birth certificates.