This is from the U.S. Customs and Border Protection website;
Land or Sea Travel: U.S. citizens entering the United States by land or sea are required to present a valid WHTI-compliant document, which include:
U.S. Passport Cards
Enhanced Driver's Licenses
Trusted Traveler Cards (NEXUS, SENTRI, or FAST)
Military Identification Cards (for members of the U.S. armed forces on official orders)
U.S. Merchant Mariner Document (for U.S. citizens on official maritime business)
Military personnel traveling under orders may present photo ID and orders. Family members must present a passport (with the exception of children 15 and younger arriving by land or sea.)
Children: U.S. citizen children ages 15 and under arriving by land or sea from a contiguous territory may present an original or copy of his or her birth certificate (issued by the Vital Records Department in the state where he or she was born), a Consular Report of Birth Abroad, or a Naturalization Certificate. If the child is a newborn and the actual birth certificate has not arrived from the Vital Records Department, we will accept a Hospital issued birth certificate.
This is from the Canadian Border Services Agency website;
When you enter Canada, a CBSA officer may ask to see your passport and a valid visa, if one is necessary. If you are a citizen of the United States, you do not need a passport to enter Canada. However, you should carry proof of your citizenship, such as a birth certificate, certificate of citizenship or naturalization, as well as photo identification. If you are a permanent resident of Canada or the U.S, you should bring your Permanent Resident Card with you
2009 Holiday Rambler Admiral 33SFS (34' 3")
2008 Jeep Liberty - North Edition (4x4 auto)
FQCC/Camping Quebec, KOA, Good Sam, Coach-Net
"In this time of heightened security, all transportation workers need to become informed about the Transportation Worker Identification Credential (TWIC™). You will need a TWIC™ to gain unescorted access to secure areas of Maritime Transportation Security Act (MTSA) regulated facilities and vessels."
Our passports expire in November, just sent in our applications for Nexus cards. $50 for 5 years is better than the passport. We only travel to the US, so we don't really need passports to go anywhere else.