When the U.S. runs low on oil, how safe is Canada?

By most measures, “peak oil” is occurring now or will do so very soon. At that point, oil prices will spike and there may be shortages. (Recall that just prior to the bank meltdown, oil prices spiked to $147/barrel.) This will be disastrous for the U.S. economy. The question is, What will the U.S. do about the situation? If history is any guide, they will avoid addressing the root cause and instead invade or otherwise control a country that has oil. Guess who’s closest, has oil reserves second only to Saudi Arabia, and whose military could be vaporised, if necessary, as quickly as the late and unlamented Saddam Hussein’s?