Well, maintaining a certain amount of monopoly on violence is sort of one of the defining features of modern states. They also tend to get a little irate over the idea of their own citizens conspiring violence against them - no news there.

That aside, IMHO the whole "enemy combatant" deal is about the damn biggest piece of absurd, baseless and purposefully idiotic legalist mumbo-jumbo in quite a while. Grade A+ organic fertilizer, expect I suspect anything grown with it will end up crooked...