There aren't many attornyes or academics who specialize in in "space law"--which I take it is concerned primarily with puzzling jurisdictional dilemmas. A good many of his journal articles deal with the Second Amendment and/or federalism.
Well, it's actually more than that--it's about whether or not things like sovereignty and property rights even exist, and what their their limits are. But not many work on it because it's an arcane topic, currently. I would assume that in his case it's a labor of love.
A good many of his journal articles deal with the Second Amendment and/or federalism.
But the only full book that he's written, AFAIK, is a seminal work on space law...