Thunderbolt, there is a fatal flaw in your argument.
G-d demands more from leaders. Not just leaders in humans, but leaders in nations. The United States, as the only Superpower, is expected more of by G-d. A country like Canada, who has never been a Great Britain or Soviet Union or United States of America has no sway over the world. Canada isn't in a leadership position like the United States is.
Because G-d demands more from leaders, if the US falters on this issue, the retaliation will be worse than for Canada.