This is what we non-Americans have been trying to tell you for quite some time.
Talking to Americans... YouTube - Rick Mercer - Talking To Americans YouTube - Ric Mercer Talking with Americans
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In seriousness...don't worry about it. Most Canadians don't know that the Queen is our Head of State, or that the Gov. General is our Commander-in-Chief.
Most Canadians would also be hard-pressed to correctly answer, "Which state is Washington D.C. in?"
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It's a trick question. Washington D.C. lies in the District of Columbia, which technically isn't a state.