Donald Trump's proposed tariffs pose a significant threat to the North American economy, particularly for Canada and Mexico. While the USMCA might offer some protection, Canada still risks substantial economic damage from retaliatory measures if exemptions aren't secured. Mexico faces added pressure due to potential linkages between tariffs and immigration policy. The overall impact could be disrupted supply chains, higher prices, and global market instability. These proposals highlight the inherent fragility of international trade agreements.