Graham Thomson: Pipeline squabble is a national dispute

The trade fight between Alberta and British Columbia isn’t just a squabble between two provinces or two premiers but a dispute that has potential implications for the whole country.
By wanting to regulate what comes through interprovincial pipelines from Alberta to B.C.’s West Coast, the B.C. government is threatening federal powers.
That’s why Alberta’s Premier Rachel Notley is demanding Prime Minister Justin Trudeau get involved.  If Trudeau lets B.C. question his