A disturbing effect of the Trump era is how the most routine bureaucratic exercises become freighted with existential panic. …Despite having negotiated it himself, Donald Trump has attacked the CUSMA deal relentlessly. …The drumbeat of reporting over the coming sit-down with US officials might have you believing we are headed for gladiatorial combat, and not besuited teams working out the fine print of customs classifications and supply chain logistics. In this world, Pascal Chan, who helps lead the Canadian Chamber of Commerce, has emerged as a kind of trade whisperer. …Pascal Chan: There’s concern that if we don’t get to a renewal right now, everything falls apart. That’s not the case. We just go then into an annual review cycle every year. Sure, if we can hit a renewal now, that’s great. It extends the duration of the agreement. But the practical effect of a failed renewal is more uncertainty, not instant collapse.