Canada’s premiers visited Washington this week to make the case for open trade, but influential figures in the president’s circle see tariffs as the path to prosperity.

Logistics experts say it was impossible for major parcel carriers and USPS to overhaul their operations in a matter of days.

President Donald Trump is taking a blowtorch to the rules that have governed world trade for decades. The “reciprocal’’ tariffs that he announced Thursday are likely to create chaos for global businesses and conflict with America’s allies and adversaries alike.