Carney vowed Sunday to “keep our tariffs on until the Americans show us respect” in a message to U.S. President Donald Trump.

Canada's ruling Liberal Party is choosing a new leader on Sunday to replace Prime Minister Justin Trudeau, who said in January he was stepping down after growing dissatisfaction over his performance.

As the trade war between the once best friends continues, ex-Bank of England boss Mark Carney will be Canada's next PM in a widely expected victory.