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?

President-elect Donald Trump is threatening to impose sweeping new tariffs on Mexico, Canada and China as soon as he takes office as part of his efforts to crack down on illegal immigration and drugs