Justin Trudeau will feel the back of Trump's hand if he even attempts a pivot around a NAFTA issue.  He'll land laughing like he did in his election antic down the staircase, but Mr. MacNaughton is correct in his advice to attempt a transversal over differences rather than a pivot; i.e.,  "articulate our values, the values of Canadians, in terms of generosity and inclusiveness and tolerance, ...  more in the sense of reasserting as Canadians our values as they apply to each other, not doing it in a pointed  'we are and they’re not'  way."  In other words, attempt to traverse  "différance" ( Jacques Derrida) rather than emphasize distinct differences.