Canada's Prime Minister is expected to be in Calgary on Thursday, and there is a lot of speculation that pipelines will be on the agenda. The Premiers of Alberta and Saskatchewan are strongly advocating for the construction of another pipeline to transport Alberta oil to the Pacific coast, although British Columbia's Premier is opposed to the plan. On Tuesday, Prime Minister Carney said that both B.C. and First Nations "have to agree" for the project to move forward. Mackenzie Gray reports.