“Millions of Americans will spend 10 to 20 cents more per gallon for gasoline and diesel fuel as tribute to our ‘friendly’ neighbors to the north,” the highly respected Dr. Verleger wrote. “The Keystone XL pipeline will move production from Canadian oil sands to a deepwater port from where it can be exported.”

But that is not merely Verleger’s opinion. It’s based on findings of the economic consultants hired by TransCanada – contained in their analyses of the pipeline’s impact on Canadian oil producers and in official testimony before Canada's National Energy Board.

 

If we were to bar the sale of Keystone refined crude overseas, it might well lower prices, Certainly it has little to do with industry propaganda by way of Congress ferr sherr.

 

Most compelling arguement is security imo.In an e-mailed statement, TransCanada spokesman Terry Cunha writes that Keystone XL could help cut US reliance on Mideast and Venezuelan imports “by up to 40 percent.” He cites a 2010 US Department of Energy study that he contends says more Canadian oil would “help reduce US imports of foreign oil from sources outside of North America.”

 

Theoretically supply and demand would matter.. Not neccesarily, as the Arab nations raise and lower production whenever it suits them..Also, the type of crude matters.

 

Politicians paint a rosy picture of lower gas prices and abundant supply, but Canadian firms behind the Keystone pipeline expect it to supply Gulf Coast export markets and raise Midwest oil prices.

 

Some of these concerns popped up, albeit briefly, in US congressional testimony last year on the pipeline project, and have given rise to a recent proposal to bar the sale of Keystone oil overseas.

Good article Christian  Science Monitor http://www.csmonitor.com/USA/Politics/2012/0309/Inside-the-Keystone-pipeline-How-much-would-it-really-help-US-consumers/(page)/2