During a press conference, The Toronto Star’s Tonda MacCharles noted she had been watching Carney’s facial expressions during the sit-down and was curious as to what had been going through his mind — particularly as Trump spoke about “erasing the artificial border” between America and Canada and mocked Carney’s predecessor, Justin Trudeau.

President Trump and Prime Minister Mark Carney met at the White House on Tuesday amid tensions between the U.S. and Canada over trade and other issues.

Canada’s new prime minister, Mark Carney, is making what everyone is calling a “high stakes” visit to the White House today to meet with Donald Trump, who may or may not make his pitch for Canada to become America’s 51st state in person.