This is a rather silly question, in fact. Air France has a corporate presence in the US, doesn't it? You haven't asked about the locus of the action (or point of sale of the ticket), but locus of the action in this case, includes the US, though once you cross borders, you don't necessarily need that.

Yes, yes, I know, if you buy a ticket from a DB reseller in the US, and get hit by a train on a platform outside Heidelberg, locus of the action is entirely Germany and first venue, if not all venue, should be Germany ... but DB doesn't have property in the US that can be seized, does it?