Jonathon Azzopardi, the president of the auto parts manufacturer Laval Tool, can see clear across the US-Canada border from his desk in Windsor, Ontario, just 4 miles from Detroit. This week, that view started to look much more expensive.
On Sunday, President Donald Trump said the US would begin to place 25 percent tariffs on goods imported across the Canadian and Mexican borders, a stunning reversal of decades of free trade across North America. Both nations threatened to retaliate with their own tariffs. Then, a last-minute reprieve: Late Monday, Trump said tariffs against both nations would “pause” as both nations pledge to boost their border security. The president has also…