Why is it necessary to submit our passport every time we apply for a Canadian visitor visa, even if it has been rejected before?

Here are some reasons why you need to resubmit your passport when reapplying for a Canadian visitor visa ¹ ²: - The Canadian government needs to put a visa in your passport, if your application is approved. - The government requires a clear, colored copy of your passport or travel documents that you will use to travel to Canada. - If your passport has stamps, visas or markings on any of the pages, you must provide a copy of those pages as well. https://www.canada.ca/en/immigration-refugees-citizenship/services/visit-canada/after-apply-next-steps.html