Alberta Politics: Is just talking about restricting diluted bitumen in pipelines an unconstitutional impediment to trade?

PHOTOS: Some of the Fathers of Confederation looking, well, fatherly. Below: Steely eyed Alberta Premier Rachel Notley, B.C. Premier John Horgan, and would-be premier Jason Kenney. In case you missed it, a new constitutional doctrine seems to be developing in Alberta. To wit: the idea that creating business uncertainty violates Section 121 of the Constitution ...