IANAL, but many European countries have something called "Database copyright" (see https://en.wikipedia.org/wiki/Copyright_law_of_the_European_...). Basically if you build a database of something you can get a copyright for the database as a whole, even if there's no copyright for the individual items. I wouldn't surprise me if the German government claims that their list falls under these database copyright laws. But even if that's the case there would still be the question how copyright treaties affect such a copyright and if this copyright is enforcable in the United States.