Category talk:American alternate history novels

How do you define "American", in terms of this category?!?
Works that mention America? Works that were or are available for sale there? Has to be something like that, to make works by British author Charlie Stross belong to the category... Unless someone gives some good reasons for his stuff being on this list, I'll take them off in a week or so.--CRConrad (talk) 22:30, 15 September 2011 (UTC)