Can I travel to Canada by car with an 1-month expired US passport?
An expired passport is no good. However, for American Citizens, a passport is not required but is strongly recommended. Alternatively, you will need other documentation that shows proof of American citizenship such as a birth certificate, a certificate of citizenship or naturalization or a Certificate of Indian Status, plus a photo ID. Remember, you will need to comply with the stricter U.S. entry requirements to return to the U.S. Source: Documents Needed to Enter US or Canada