Global National: Dec. 17

How Liberal MPs are divided over Prime Minister Justin Trudeau’s future after Chrystia Freeland’s sudden resignation, and what led to her quitting. Will Canada’s new border security plan be enough to avoid U.S. president-elect Donald Trump’s tariff threat? Plus, Canada Post workers begin sifting through an enormous mail backlog after returning to work for the first time in more than four weeks.

• WATCH: Global National – Dec. 17