That shouldn't placate us. The real trouble is what is legal, not what isn't. Even when it doesn't lead to collateral damage, the use of standing armies at home can, to quote Jefferson, "overawe the public sentiment," and acclimate Americans to a militarized home front inconsistent with democratic life.
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Was Jefferson "slamming the military" when he said this Dragoon?
Jefferson was correct for the threats of his time. One could be put together quick enough. But today we'd be in really bad shape if we didn't have a "standing" army ready to fight when needed. In my opinion, we might best have one ready on our Southern border because that need may be coming soon.
But this isn't the issue here. This is a effort to have a response force trained and ready to respond to domestic chemical, biological, nuclear, etc. attacks that would otherwise - and might still - drive our country into panic, chaos, and anarchy. This is a good thing - not a bad thing. Let's see it for what it is and manage it carefully and properly.