Canadian Prime Minister Mark Carney met US President Donald Trump in Washington DC today for the first time since the former won Canada's recently concluded election. Carney has vowed to stand up against Trump's tariffs and threats to annex the United States’ northern neighbour.During the high-stakes meeting, Trump told Carney Canada as 51st US state would be 'wonderful marriage', adding that he 'would love' new Canada trade deal. Trump said US will be 'friends' with Canada and he will go over 'tough points' with new Canada PM.Carney told Trump during a meeting at the White House that Canada would never be for sale. Trump, who has repeatedly suggested that Canada could become the United States' 51st state, responded by saying: Never say never .ALSO READ: Can Mark Carney-Trump meeting repair frosty Canada-US relations after tariffs?Trump's rude welcome for CarneyTrump gave a frosty welcome to the White House on Tuesday, saying on social media just before his arrival that the United States doesn't need “ANYTHING” from its northern neighbor.“I very much want to work with him, but cannot understand one simple TRUTH — Why is America subsidizing Canada by $200 Billion Dollars a year, in addition to giving them FREE Military Protection, and many other things?” Trump wrote on Truth Social. “We don’t need their Cars, we don’t need their Energy, we don’t need their Lumber, we don’t need ANYTHING they have, other than their friendship, which hopefully we will always maintain.”The president added that his inquiry about why the U.S. needs anything from Canada “will be, most likely, my only question of consequence.” It's a claim that defies the underlying economic data as the United States depends on oil produced in Canada, in addition to an array of other goods that cross border trade have helped to make more affordable in ways that benefit growth.ALSO READ: 'No Kings' mass protests planned in US to counter Trump's birthday military parade: Key pointsCarney secured the role of prime minister by vowing to confront the rising hostility from Trump, all while maintaining the composed demeanor of an economist with experience leading the central banks of both Canada and the United Kingdom.Trump has upended a long-standing alliance by proposing that Canada become the 51st U.S. state and imposing heavy tariffs on a vital economic partner involved in the production of automobiles, as well as the supply of oil, electricity, and other key goods. His actions sparked widespread outrage, which helped fuel a dramatic resurgence for Carney’s Liberal Party in last month’s election, as voters reacted strongly to the escalating trade war and perceived threats to Canadian sovereignty.Trump wants Canada as 51st US stateTrump has repeatedly threatened that he intends to make Canada the “51st state.” He said in an interview with NBC’s “Meet the Press” that aired Sunday that the border is an “artificial line” that prevents the two territories from forming a “beautiful country.”ALSO READ: Trump announces new national holidays. Will Americans have to work on those days?Trump has maintained that the U.S. doesn’t need anything from Canada. He is actively going after a Canadian auto sector built largely by U.S. companies, saying, “They’re stopping work in Mexico, and they’re stopping work in Canada, and they’re all moving here.” He also said the U.S. doesn’t need Canada’s energy — though nearly one-fourth of the oil that the U.S. consumes daily comes from the province of Alberta.The president has also disparaged Canada's military commitments despite a partnership that ranges from the beaches of Normandy in World War II to remote stretches of Afghanistan.Trump has said that Canada spends “less money on military than practically any nation in the world. “They pay NATO less than any nation,” he said. They think we are subsidizing. They think we are going to protect them, and, really, we are. But the truth is, they don’t carry their full share, and it’s unfair to the United States and our taxpayers.”Bothwell noted that Carney might be under little pressure to reach a quick deal as Trump has at times reversed, delayed or defanged his tariffs, such that over time Trump might be in a weaker position if talks are prolonged.“It may not matter as much in the summer as it does today because every time he’s made one of these announcements, next week it's, ‘Oh, I had my fingers crossed. I didn’t mean it,’ he said of Trump.(With inputs from agencies)