Mark Carney has requested the American president stop referring to his country as the 51st US state

Canadian Prime Minister Mark Carney has claimed he asked US President Donald Trump to stop taunting his country as the 51st state during their first meeting at the White House on Tuesday.

Trump has repeatedly floated the idea of acquiring Canada and described its border with the US as "artificial." During the meeting with Carney in the Oval Office, Trump reiterated that sentiment and said that a union between Canada and the US would be a "wonderful marriage" and could bring "tremendous" benefits.

"When you get rid of that artificially drawn line... when you look at that beautiful formation when it's together, I'm a very artistic person," Trump said, recalling his real estate developer background.

Carney interjected by stating that "there are some places that are never for sale," likening Canada to the Oval Office and Buckingham Palace. 

"Having met with the owners of Canada over the course of the campaign the last several months, it's not for sale, it won't be for sale, ever," the PM said, adding that the two nations could nevertheless work toward building a strong partnership together.

Speaking to reporters after the meeting, Carney said he had asked Trump to stop using the term 51st state and described the comments as "not useful." At the same time, he acknowledged that Trump is the US president and "he'll say what he wants to say."

The meeting came days after Carney's election victory, in which his Liberal Party secured a fourth consecutive term. Carney centered his campaign on attacking Trump over tariffs and his insistence on acquiring Canada.

At the beginning of their meeting, Trump congratulated the new prime minister and joked, "I think I was probably the greatest thing that happened to him."

Despite ongoing tensions over tariffs, which Trump said would stay in place regardless of what Carney said, both sides ultimately described the talks as positive.

"Regardless of anything, we're going to be friends with Canada," the US president told reporters. 

Meanwhile, Carney called the discussions "wide-ranging" and "very constructive" and stated that trade negotiations would continue, including during the upcoming G7 summit in Canada's Alberta province.