Some shifts since 2005:

• Russia and Brazil are new entrants to the oil export market
• Canada becoming more prominent

Note that almost all of the above production goes to the US and those imports only make up about 10% of US daily consumption. So there is a huge market, hence the economic and political forces beyond the proposed Keystone Pipeline Expansion.  Permanent defeat of this would represent a significant first step against business as usual. Not gonna happen …