I don't find this to be an extremely compelling point, though.

There's infinite bad things that can be committed by anyone, from the government or otherwise, where the only thing preventing it is policy and procedure. The only thing preventing an Apache helicopter from firing on schoolchildren under order of the president.... is policy. Theoretically, as commander-in-chief, the president has the authority to order that, right? But what's important is that he doesn't. What's important is there's policy that prevents it.