Ex-central banker Mark Carney will be formally sworn in as prime minister of Canada on Friday, putting him in a position to fight tariffs from U.S. President Donald Trump that could devastate the trade-dependent Canadian economy.

Canada’s new leader previously denounced Trump’s planned tariffs on the country, saying Canadians would “stand up to a bully.”

Canada’s next leader is a relative political newcomer, coming instead from a decades-long career in finance where he steered governments through major global crises and periods of upheaval – experience he’s hoping to now leverage as he prepares to take over from Prime Minister Justin Trudeau.