Ha! Looks like Chris Christie actually fought back on that one.
Seriously though, it looks so weird and aggressive when he drags people towards him like that. I'd just let go and and call him out on it in front of everyone and make it super awkward.
I've noticed that. It's difficult to describe it as anything other than pathetic. Still, if you knew you were going to meet him, at least it would give you a reason to use one of those strange executive toy grip strengthener things so you could try to break the bones in his hand.
https://youtu.be/-SSclEtLXJ8