- Canada sells all of its oil to the U.S. If we won't buy it, someone else will.
- The decision benefits Venezuela
- The environmental concerns that have been raised are all red herrings, since hundreds of pipelines of various sorts already crisscross the Ogalala aquifer
- In 2008 Obama promised to end our dependence on buying oil from the Middle East and Venezuela; this decision runs counter to that
Definitely worth a click.