They already did haha, they're fighting with Columbia over who has the rightful ownership of it. Was found off the Columbian coast but it's a Spanish ship. I'm not an expert on the specific laws involved but I figure if it was a Spanish ship and not just some merchant dude from Spain then they're the rightful owners. If it were like the Holy Roman Empire that'd be one thing, it no longer exists and is made up of numerous countries but Spain was and still is Spain, the government type has changed but time doesn't make your ownership of an object any less relavent. But I also don't blame Columbia for trying, $17 billion is a hell of a lot, it'll probably line the pockets of those in charge though, Columbia has come a long way but still not the government id want to live under. Hell I'm not a fan of most of what the US does.