Keep in mind the travel requirements.
Entry into Canada: Canadian law requires that all persons entering Canada carry both proof of citizenship and proof of identity. A valid U.S. passport, passport card, or NEXUS card satisfies these requirements for U.S. citizens.
Children under 16 need only present proof of U.S. citizenship.
For more information please visit the U.S State Department's web site.LINK
BEFORE CROSSING OVER INTO CANADA...