A convenient take on a comment obviously describing all pollies...
No matter if you like or hate Trump it's not going to make a scrap of difference to what he does. You tell him to keep his mouth shut, well that's his tool for negotiation, the loud hailer in a global space.
He's the most powerful individual in the world and despite what he's done he's the President and he can do what he likes (almost).
So, I'll ask again what does his past matter? It's not going to change what he does, it's not going to stop what he does, where's the issue?