The Globe and Mail reports in its Saturday edition that Canada and the United States have agreed to begin comprehensive negotiations on a new economic and security relationship following next month's election, Prime Minister Mark Carney said Friday. A triple-bylined item led by Steven Chase says this followed a call between the Prime Minister and U.S. President Donald Trump -- the first time the two have talked since Mr. Carney took office on March 14. This agreement paves the way for talks between Mr. Trump and whoever is prime minister after the April 28 election. The trade dispute, along with Mr. Trump's repeated suggestion that Canada become the 51st state, has overshadowed the Canadian campaign. The Prime Minister's Office acknowledged Mr. Carney must win a mandate first. Mr. Trump described the conversation as "extremely productive." Earlier this week, Mr. Trump signed an executive order that imposes 25-per-cent tariffs on foreign-made autos and some auto parts, a move that threatens to damage Canada's auto sector, which is deeply entwined with the U.S. The order states that Canadian-made cars would face the 25-per-cent tariff on the value of their non-U.S. parts, not the entire price of the vehicle.