This article provides little assurance of success for Trudeau's mission. I am not optimistic of the outcome regardless of how amicable the meeting is. RC needs a win on NAFTA as much as we do but opting out of it would look good to his supporters and that seems to be as important to him as making a new deal.

We need to plan on a world where strong economic links with the US are severed for as much as a decade. 

It will take that long for people get over the bitterness that will come if the US opts out of NAFTA. Trade deals do not grow on trees.