In a phone call with Canadian Prime Minister Mark Carney on March 28, US President Trump once again raised the idea of making Canada the 51st state of the United States, which is in stark contrast to what the prime minister himself later publicly stated. According to Canadian media reports, two sources familiar with the matter said that Trump raised the issue of the 51st state during the call and explained the advantages of Canada joining the United States. Carney then expressed his disagreement. At the end of the call, Carney said: "We agreed to disagree on this issue." However, the message that Prime Minister Carney revealed to the outside world later on the 28th was that "President (Trump) respected Canada's sovereignty in both private and public remarks today." It is reported that April 28 is the day when the results of the Canadian federal election are announced, and during this campaign, Canada-US relations have become the focus of many Canadians.