Resource Insights: Why isn't the Keystone pipeline extension going to eastern Canada?

Resource Insights
Why isn't the Keystone pipeline extension going to eastern Canada?

So much of the discussion surrounding an extension of the existing Keystone oil pipeline system which spans Canada and the United States assumes that the growing production of bitumen (it's not really oil) from the Canadian tar sands is either going to the United States or to China. But the following question ought to be an obvious one to anyone who knows that Canada imports 43 percent of the oil it consumes: Why isn't there any discussion of a new pipeline to eastern Canada where most of the oil consumed is imported?