[Warning: This post is preliminary, superficial, and almost certainly unoriginal. "Just throwin' it out there!"]
Lately I’ve been making my way through Schmitt’s Nomos of the Earth, primarily because it’s where he discusses the katechon (and because I want to have the relevant background when I turn to Cacciari’s Il potere che frena). One thing that strikes me is that it seems very Heideggerian in its approach and tone — the insistence on an originary meaning of nomos that our modern and superficial concepts have caused us to forget, the vast epochal shifts turning on conceptual changes (such as the meaning of a geographical “line”), etc.
One would presume that there would be certain similarities in their thought, given that both were able to function as major Nazi intellectuals, but it’s interesting to me that the connection only jumps out at me in this post-war work. In retrospect, though, one could certainly make a connection between the existential stakes of the properly political in Schmitt and Heidegger’s notion of authentic being-toward-death (and in fact, Paul Kahn does make exactly that connection in his rewriting of Political Theology). And Schmitt’s “sociology of concepts” could be a kind of “history of Being.”