Canadian Prime Minister Justin Trudeau soared to victory in 2015 on the promise of change and “sunny ways” for the country.

When Donald Trump jokes that Canada could become the 51st state, and refers to Justin Trudeau as a governor rather than prime minister, it's all an effort to "humiliate" the Canadian leader, a former senior Trump adviser says.

Canadian Prime Minister Justin Trudeau has an increasingly narrow path to remaining as the leader of his party and, thus, the country, particularly after his deputy prime minister, who worked for him for more than a decade,