To my mind, David Davis should be the one to go- he has directly lied, again and again about the assessment papers, and took a very long time to admit he had been- only when cornered and requested to provide evidence- his lies was all he could muster. Not only did he lie to the House, our elected Parliament, he lied to all of us, and in doing so, and in being so cavalier, arrogant and unprepared- put the whole of the negotiations in jeopardy- and with them, our economy- and as such all our public services, be thes NHS, education, social services, etc.
For me, this is a far far bigger offense than Green's.
And he is now showing that his will continue to lie - to us- as he clearly said he would resign if his mate Green was pushed- and is now backtracking, saying Green resigned. Now we ALL know he is an inveterate liar- but so does every single negotiator in the EU, and Barnier the most. They know his word is not worth tuppence, or 2 centimes - and it puts us all at risk. HE SHOULD GO.