The problem is that you'd have to get them all at the same time. Wikileaks published a huge encrypted file last year which they say is their "insurance policy." The implication is that the dirt in it is so bad that no government could dare try to take them out lest they make public the decryption key.
Even if you got the actual heads of it, all the fanboys have the ‘key’.
If it’s real info and real ‘bad’, then the US is either at the mercy of pimple-faced geeks who can now control aspects of our policy or ‘we’ have to deal with the fallout of ‘bad’ and move on from there.
That’s a pretty horrid thought to ponder, but when you get right down to it, it’s the reality: Anarchists in control under threat of blackmail.
Killing them all and deal with whatever happens is the far lesser of the ‘evils’ because at some point, just like any other blackmailer, they will demand more than we collectively as a country are willing to or CAN give.