The exact nature of the documents aren’t given here, but there was an hour long meeting in Nov betweem the AG and 5 top aides to discuss the plan, and the implication is the he signed off on a 5 point plan.
I hope these documents get posted in full somewhere online. I find it particularly interesting the reference to part of the plan that would give advance notice to Republican elected officials in the affected states. I wonder what was the plan for Democratic elected officials?