Canada – Canadian Dual Citizens Must Carry Passport
Beginning November 10, 2016, dual Canadian citizens in Canada must carry their Canadian passport when travelling or transiting through Canada. Travelers are advised to carry both passports when traveling because the new electronic system (eTA) goes into effect soon, in which it will verify that all passengers have an appropriate travel document before they are able to board a flight to Canada.
Canadian citizens are exempt from requiring an electronic travel authorization since it is required for foreign nationals, however, they must carry their Canadian passport, as well as dual citizens of Canada. Dual citizens are citizens of more than one country. If travelling to your other country of citizenship, it is imperative to carry both passports to avoid risks of being denied entry to Canada.