When President Donald Trump welcomes his new Canadian counterpart to the White House on Tuesday, among the questions looming over their Oval Office encounter will be whether Trump will agree to attend a major summit Prime Minister Mark Carney is hosting next month in Alberta.

The Canadian prime minister will meet with President Trump, days after being elected on an anti-Trump platform as relations between the two allies are at a historic nadir.

Prime Minister Mark Carney will meet his U.S. counterpart Tuesday for a high-stakes White House meeting — a face-to-face that comes as bilateral relations are at their lowest point in decades and with a trade war raging.