Ok you're all going way OTT on this IMO, the fact is he's bodged his passport and should get out. End of. Morals, concepts and all that just complicate this. As for ownership, if someone has exchanged money for goods then they own it. We don't live in the year dot when we all roam around inhabiting whatever we find, we've built a society and that's how things go around here. If you want to go all fairy on us, go live in the desert or something.