arguments in this case given that if the regulation is no longer on the books? . >> yeah. thanks for having me on. it is an unusual setup. they agreed to hear the case. the law was on the books, regulation, it was repealed after the court agreed to hear the case, then replaced by state law so it couldn't be repassed. i think most observers thought they would dismiss it at moot. so far the justices haven't done that. they directed the parties to argue it. they could still dismiss the case. so far they haven't done it. >> on that note, this has attracted so much interest. 50 court briefs have been filed in conjunction with this case. help us understand the importance of it, what this could mean, the fact that the court is dealing with the issues after a decades time. >> fundamentally -- >> we'll get to you in a second. . >> maybe i should defer to the expert because i'm not a gun rights expert. but the issue is there's so many