Carney calls Trump's fresh tariffs a 'miscalculation' after trade talks collapse

# Why This Matters The collapse of US-Canada trade talks signals a fundamental breakdown in North American economic coordination at a moment when both countries face intensifying competition from China and other rivals. Trump's tariff strategy risks triggering a costly tit-for-tat cycle that would raise prices for American consumers on everything from groceries to automobiles—Canada supplies roughly one-quarter of US imports—while simultaneously eroding the integrated supply chains that have underpinned continental manufacturing competitiveness for three decades. For Canada, retaliatory tariffs threaten its already vulnerable economy and could force businesses to relocate operations to non-tariffed countries entirely, rather than simply shifting to American competitors. The absence of negotiated resolution means these economic weapons will remain in place indefinitely, transforming what was once a manageable trade dispute into structural damage to both nations' growth prospects and employment.