Canada's Liberal Party will announce Prime Minister Justin Trudeau's successor on Sunday as both party chief and head of the country's government in the midst of a trade war with the United States that could cripple the Canadian economy.

After decades of bilateral stability, the vote on Canada’s next leader now is expected to focus on who is best equipped to deal with the U.S.

Former central banker Mark Carney favoured over Chrystia Freeland to replace Justin Trudeau as Liberal party head