6.
I am not a devoted student of Sun Tzu, but I am pretty sure that he would suggest that it is a poor idea to leap into a battlefield that your enemy has prepared for you.
So what did Trump do? He had his team rubbish the Democrat's case, used the venue for some great, albeit repetitive, videos showing their staggering hypocrisy, and let the exercise move swiftly towards the partisan vote that was the inevitable outcome of the whole shebang.
He rejected their invitation to battle.