A week before Donald Trump fired off yet another tariff threat on his neighbors, Justin Trudeau and Claudia Sheinbaum had a chance to confer in person about how to tackle that very scenario. Would they join forces against their errant trading partner or was it going to be a case of every person for themselves?

The president-elect said that he would impose the across-the-board tariffs on Day 1 and that they would stay in place until Canada, Mexico and China halted the flow of drugs and migrants.