Container handling through the ports of Seattle and Tacoma climbed 9% on a year earlier in June, representing a marked turnaround from three months of declines. That was a markedly better performance than the 4% seen in Canada’s west coast ports and inline with California’s 8%. Yet the increase in imports of 9% can be explained by a 51% surge in shipments from Canada after last year’s computer virus issues at Maersk’s facilities. Imports from China only climbed 4% ahead of the implementation of duties on $34 billion of exports. There’s nonetheless of a downturn going into the peak season...