MYTH: It doesn’t matter where the U.S. gets its oil from because all oil exporters are the same.
FACT: Former Obama national security advisor and retired general Jim Jones has emphasized the stability of the Canadian-American relationship saying, “Every day it becomes more evident for our nation to achieve true energy security; we must engage our stable and reliable neighbors — Canada in particular… The country can’t afford to pass up the opportunity for reliable supply from a close ally and neighbor, which would leave us less vulnerable (to supply disruptions from elsewhere in the world).”
According to congressional testimony of David Goldwyn, former International Energy Envoy to Secretary of State Hillary Clinton, “[I]t does matter who enjoys the economic rents from our crude oil purchases. Many countries misuse their resource revenues, either by failing to invest them in their people, or by insulating themselves from political accountability, or even using their role as a supplier as a tool of political coercion. If we have a choice of where to pay these rents… Canada is among the best choices we have… Keystone XL will enhance U.S. supply security…”
Note that even a threat from Iran to close the Strait of Hormuz is, according to analysts, largely to blame for the recent rise in gas prices. The more we can balance our crude oil portfolio and rely less on unstable regions of the world, the more secure our energy supply will be.
 Congressional Testimony of David Goldwyn to House Subcommittee on Western Hemisphere, 31 March 2011
 Yahoo! Finance, “The Looming Threat to Gas Prices: Strait of Hormuz Explained,” 22 Feb 2012