When reading this question it struck me that the "law" tag was almost totally useless, and that a "law-usa" tag or similar would be far more helpful for anybody searching for things relevant to that jurisdiction. Initially, then, I thought of suggesting that such tags should always be country-specific.
Then I searched for everything with a "law" tag, and in two out of four cases the questions were along the lines of "in which country..." or similar, where the object was comparing laws between countries. In this case a general "law" tag makes sense.
So I don't really have a suggestion, but I do have a question that could perhaps use discussion, as per the title.