Almost every day since the expansion of Canada’s Trans Mountain pipeline was completed in May, a tanker laden with oil sands crude shipped through the line has passed under Vancouver’s Lions Gate Bridge en route to refineries around the Pacific.

Tariffs will be paused for 30 days. But a 10 percent levy on Chinese goods is still scheduled to go into effect.

Trump has also threatened to introduce tariffs - a tax on imports - on goods from Canada and Mexico, but paused these for 30 days after both countries agreed to boost border security. The US president has said tariffs are needed to help the American economy and to "protect" the country from the "major threat of illegal aliens and deadly drugs".

Greetings from Princeton, New Jersey. America’s trade war with Canada and Mexico is off, at least for now. However, the threats and counterthreats that we saw over the past few days showed how a renewal of hostilities could end up hurting one company that’s seemed to be in the driver’s seat,