When it comes to energy, America is lucky to be next to Canada, whose proven oil reserves are estimated by Oil and Gas Journal at 175 billion barrels.

This ranks just behind Saudi Arabia (260 billion) and Venezuela (211 billion) and ahead of Iran (137 billion) and Iraq (115 billion). True, about 97 percent of Canada's reserves consist of Alberta's controversial oil sands, but new technologies and high oil prices have made them economically viable. Expanded production can provide the U.S. market with a growing source of secure oil for decades.

We would be crazy to turn our back on this. In a global oil market repeatedly threatened by wars, revolutions, and natural and man-made disasters — and where government-owned oil companies control development of about three-quarters of known reserves — having dependable suppliers is no mean feat. We already import about half our oil, and Canada is our largest supplier with about 25 percent of imports. As its conventional fields decline, oil sands can fill the gap.