The Railway Association of Canada says that more than half of the country's exports are moved by rail, in addition to 70% of its intercity surface freight.
Ahead of looming deadlines, it's unclear whether either situation will resolve in time to avert these twin crises, or how long any potential work stoppages might last.
As e-commerce giants Temu and Shein continue to gain traction in the U.S., Amazon is firing back with a low-priced store mirroring the model of their Chinese competitors.