Obama hates conservatives, especially successful conservative capitalist white people. PM Harper is a conservative white person and Canada is a successful capitalist country. I believe there is some personal animus towards Harper from Obama.
It has been reported that Prince Alwaleed bin Talal of Saudi Arabia was approached by Bill Ayers to assist in raising funds for Obama’s Harvard education. It is on record that the Prince was responsible for a a $25.0 million donation to Harvard. The Saudi’s are terrified at the thought of North American oil security and what that would do to their cash flow. Two +Two = Four