Mark Carney, soon to become Canada's new prime minister, is a two-time central banker and crisis fighter about to face his biggest challenge of all: steering Canada through Donald Trump's tariffs. The Liberals announced Carney as Justin Trudeau's successor on Sunday after party members voted in a nominating contest.

Justin Trudeau, who was first elected prime minister in November 2015, announced on Jan. 6 his intention to resign as Liberal Party leader and prime minister.

Polls show Carney is the preferred leader to negotiate with Trump, who has repeatedly threatened to annex Canada and make it the 51st state and to impose devastating tariffs.