Would it be illegal to house Snowden for, let's say 24 hours, if you don't live in the US?

Why would it be? It's not my business to report anything to anyone, as long as he does not brag about criminal activities all too open ...

> It's not my business to report anything to anyone

Actually it is. If you're in a Common Law legislation there's a good chance the you could be charged with conspiracy. And if you're in a Civil Law legislation there's a good chance that your country requires you to report ongoing crimes once you gain knowledge about them (of course there's the question if a court will treat Snowden's actions as completed or as ongoing crimes).

Not arguing about the moral thing to do here, just about the legal point of view.

> if you're in a Civil Law legislation there's a good chance that your country requires you to report ongoing crimes once you gain knowledge about them

Does anyone have any citations for this please? (I'm especially interested in English law, but any other country is fine too.)

English law is common law. For further reading I recommend the following two Wikipedia links: http://en.wikipedia.org/wiki/Conspiracy_(crime) http://en.wikipedia.org/wiki/Accessory_(legal_term)

It seems that at least in the United States there's quite a broad range of things that courts consider as "conspiracy". For example, a few years ago Reinhard Berkau (a German lawyer) was sentenced to prison in the US, because of a crime one of his clients did. He also published a book on his experiences (unfortunately in German only) in case you're interested in the background.