Canada-U.S. relations: Looking back on 100 years of presidential visits

This year marks 100 years since Warren G. Harding visited Vancouver, becoming the first serving U.S. president to make the journey to Canada. Donald Trump was the last American leader to cross the Canadian border, doing so in 2018. Eric Sorensen looks back on the past century of Canada-U.S. relations, and where ties are at as President Joe Biden touches down in Ottawa.