At the very least, create separate processes for a swift, inquisitorial, ‘Black Box’ investigation to find facts and learn lessons, rather than assign blame or provide catharsis.
Laws such as the Public Records Act and Freedom of Information Act predate instant messaging and the blurring of the lines between official and personal communication.
We need an honest debate about the right balance between transparency and security on the one hand, and the need for quick decision-making and private deliberation on the other.
Scrutiny is not an unalloyed good. In any given instance it may be better that, if it cannot be done properly, it is not done at all.
Like it or not, there is a trade-off between maximal accountability and effective government decision-making.