Trudeau's right-hand man resigns amid SNC-Lavalin scandal

On Monday afternoon one of the most powerful men in Ottawa resigned. Following allegations of political interference in a court case involving engineering giant SNC-Lavalin, Gerald Butts stepped aside as the Principal Secretary to the Prime Minister. Today on Front Burner, CBC Parliamentary reporter John Paul Tasker explains why Justin Trudeau's most senior adviser-and longtime friend- would resign while denying any wrongdoing.