Can you use canadian landing papers to re-enter Canada coming from the US ?
No it isnt good enough, you wont be allowed back into Canada Permanent residents (immigrants living in Canada who are not yet Canadian citizens) travelling outside Canada need a valid permanent resident card to return to Canada. Travellers should check the expiry date on their card and apply for a new one at least two months before they travel. For more information, please visit the Citizenship and Immigration Canada website. A Canadian passport is the only reliable and universally accepted travel and identification document available to Canadians for the purpose of international travel. Canadian citizens returning to Canada who present other documents, such as a Certificate of Canadian Citizenship, birth certificate, provincial driver’s license, or foreign passport, instead of a Canadian passport, may face delays or be denied boarding by transport companies.