Where Would Keystone XL's Canadian Oil Go? And Does it Matter?

The World
Proponents contend that this oil will increase US "energy security" and decrease US reliance on other sources of foreign oil. Opponents argue that the refined products will end up going overseas. In fact, both may be partly right.  But that just begs a bigger question: What is energy security, and and how does or doesn't this pipeline help us achieve it? [...]