Read the general eligibility basics overview
Hypothetical example: a Coalhurst engineer became a Canadian citizen eight years ago, still holds an overseas identity card from her country of origin and is unsure which document establishes what. The professional route depends on Canadian or Mexican citizenship, so the practical question is what she should carry, what a second nationality changes and what a permanent resident card cannot do.
A valid passport is the clean answer
A current Canadian passport establishes citizenship in a single document and is what should be presented. A citizenship certificate proves the same fact and is worth knowing the location of, but the passport is the practical instrument. A permanent resident card proves residence in Canada, which is a different status, and it does not open this route for anyone. Where a name has changed through marriage or otherwise, carry the document connecting the names so that the records line up without explanation. If the passport is close to expiry, renew it before travel rather than relying on a certificate to bridge the gap, because the certificate answers citizenship without answering identity for travel.
A second nationality is not a problem, but choose which you present
Holding another citizenship or an overseas identity card alongside Canadian citizenship does not remove the benefit that Canadian citizenship provides. The applicant should present the Canadian passport, because that is the fact the category rests on. Where the other country's documents are needed for travel or family reasons, keep them separate from the application file. If the second citizenship is one that affects other immigration questions, raise it with an adviser deliberately rather than leaving it to be discovered, and answer any question about it truthfully. Keep a written note of both citizenships and their document numbers in the household file, so that anyone advising the family can see the position without a further round of questions.
Check every family member separately
Households frequently contain a mix: a naturalised citizen, a permanent resident spouse, children born in Canada, and sometimes a child born abroad whose citizenship was derived rather than granted. Each person's status has to be established on its own documents, because a family does not share one status. A spouse who is a Canadian permanent resident rather than a citizen may face procedural steps the principal does not, including a visa requirement, so discovering it at the last moment can force separate travel or delay the household. Build that table once, keep it with the passports, and update it whenever anyone's status changes, because it is the single page that prevents the late discovery.
What else is on your mind?
Does Canadian permanent residence give me access to TN?Is a matching job title enough for TN?Can years of experience replace a degree for TN?Can my own U.S. company employ me under TN?Editorial source review: 2026-09-07. General preparation guidance, not an individual assessment.