Trump’s Canada tariffs threaten Detroit-Windsor’s auto lifeline

Trump’s plan to slap 50% tariffs on Canadian goods from January 1 upends the Detroit–Windsor cross-border auto supply chain, where about $1bn in goods cross daily and prices are already rising. Michigan voters oppose tariffs and polls warn they would raise costs, creating a political risk for Republicans in key swing races. Economists caution that both the US and Canada would suffer, while local leaders and the UAW criticize the escalation; Canada vows retaliation, raising the specter of broader North American manufacturing disruption and potentially energizing the Democratic challenger Abdul El-Sayed in Michigan.