Photo: The Canadian Press

Prime Minister Justin Trudeau and his federal Liberal government will confront the reality of Donald Trump in the White House as his cabinet members begin gathering Sunday in Calgary for a three-day retreat that is to include discussions with an adviser to the new president.

Up to now, Trudeau has had a relatively smooth ride guiding Canada's relations with the U.S., thanks to being so simpatico with Barack Obama – natural allies on climate change, with a close personal relationship that oozed brotherly affection.

Now the Liberals are girding for a major reset with Washington, which is expected to be the preoccupying pastime for Liberal ministers during their upcoming meetings.

Discussions will be held over the next few days including with Stephen Schwarzman, the CEO of the Blackstone Group investment firm appointed in December to lead the President's Strategic and Policy Forum, the Prime Minister's Office confirmed Sunday.

Dominic Barton, the head of the Trudeau government's influential council of economic advisers, is also set to attend. Earlier this month, he cautioned that Trump's pledges on trade and taxation must be taken seriously in Canada.

The Liberal government hopes to send a message to the Trump administration that Canada and the U.S. have a shared agenda, Natural Resources Minister Jim Carr said Sunday in Calgary.

"We will have to see what the administration actually does," he said. "Many words have been spoken and there's been tons of speculation, but we enter the relationship knowing that there is common ground in the energy sphere and we'll look for it."

Earlier Sunday in Washington, Trump said he had scheduled meetings with Trudeau and Mexican President Enrique Pena Nieto and signalled negotiations will have to begin on NAFTA.

"I ran a campaign somewhat based on NAFTA," Trump said. "But we're going to start renegotiating on NAFTA, on immigration, on security at the border."

The date of the meeting between Trudeau and Trudeau has yet to be announced.

So far, the Liberals have reached out to the Trump's transition team, "in order to begin conveying the importance of our economic partnership and the American interest in maintaining it," said Roland Paris, Trudeau's former foreign policy adviser. But now the real work starts with Trump taking over the White House.

"This is a big shift. It's not just true for Canada but for every country in the world. We have a U.S. administration which is pursuing an approach which looks like it will be different from any U.S. administration in our lifetime."