

It would be smart to diversify, but it’s going to take a long time, and it’s never going to be as efficient as just moving things across the biggest land border in the world.
Canada would have to build up the Atlantic shipping ports, and all the rail and highway connections leading to those ports to do more business with Europe. That’s going to be expensive and take a long time.
As an example, Australia is an isolated continent so everything entering/leaving has to go by port. Its largest port is the Port of Port Hedland in WA. That port handles more than 500 million tonnes of cargo every year.
By contrast, the biggest port in Canada is the Port of Vancouver which handles only 140 million metric tonnes, less than 1/3 of what Port Hedland handles. Australia has multiple other ports over 100 million tonnes too.
Or she set it to private because she was overwhelmed with the messages she was getting.