Teach Trump to be Presidential? Have you heard of King Canute? Are you related to him?
Well, I suppose you could start by having him find a wife who knows how to keep her knickers on public. That would be a start. Then you could move onto teaching him to lay bricks — because if a wall is going to be built, it will be him doing it. Or perhaps you could teach him not to grope his daughter while suggesting that if he wasn’t her father he’d be doing a lot more.
Oh, yes — and find him a good barber.