Answers to legal questions are often highly specific to the jurisdictional context that the OP is asking. Do we need to make a location specific tag required (at least a country) when asking questions?
In my opinion, tags are the ideal way to limit questions to specific jurisdictions. On Stack Overflow, you can ask an object initialization question that will have very different answers depending on whether it's tagged c++, c#, or objective-c. There might be some overlaps, but it's better to be very specific about the domain of the question. In the same way, I expect that most legal questions depend primarily on jurisdiction. There might be answers that apply across legal domains other than jurisdiction such as Common law, Civil law, International law, Admiralty Law, etc. So those seem like useful tags as well.
What I can't imagine being very useful is a question that does not specify some jurisdiction or domain.
I suspect most questions on this site will have jurisdictional differences, and may in many cases not even be settled law. I would urge us not to parochialize the site unnecessarily. I.e., whenever possible let's allow people to ask questions without specifying a locale, and provide answers that include nuances specific to locales. Even if the OP specifies a locale, an answer that applies to a different locale should still be allowed, and encouraged if it would illuminate others interested in the general question.
E.g., I live in Pennsylvania, and I may have a burning question peculiar to my township's ordinance. While I would love an official opinion from my town's solicitor, and would certainly mark that as "the answer," I am on this site expecting to hear how the subject is or has been legally addressed throughout the country and the civilized world.
There are too many locations and there will be too few people on this site. The original poster can specify a location via a tag but answers that offer how it works elsewhere should not be considered incorrect, i.e. should not be downvoted on the basis that they don't answer the question.
For example, laws are very similar across Europe but there are differences. It would, of course, be better for the asker to receive an answer specific to his country but an answer explaining how it works elsewhere might also help him. It is unlikely that for each question, there will be an active visitor of this SE site that knows the answer in that specific country, especially for difficult questions.
Thus, perhaps a location tag should recommended, but even answers that don't even touch that location should be permitted.
As for whether the tag should be required, we do not have the technical capability to make that happen. The question is not whether the tag should be required but whether the asker should be required to limit himself to a single jurisdiction.