Dear Common,
Keystones is both a pipedream and a punchline. The government should spend trillions building a infrastructure to freight oil across the country from a place it may or may not be extracted to a place that it may or may not be refined. Also, the infrastructure should than be privatized, and those private companies should not be obligated to use it.
If you like the idea of massive government projects with no accountability, than in keystone. Otherwise, just lower taxes on gasoline.