In today’s newsletter: A collapsing trade deal has united Canadians more than ever, in an existential confrontation with the US presidentGood morning. When the Guardian asked Canadian readers whether they planned to boycott US products after dramatic escalations in the ongoing DC/Ottawa trade war, we received more than 2,000 responses within 12 hours.This inundation is perhaps evidence of the existential crisis many Canadians feel they now face, something often lost in the granular reporting o