Who can enter Canada right now?
Tourism = closed. Currently the borders for Canada are still essentially closed for tourism, regardless of the nation the traveler is coming from.
Essential Travelers = some exceptions. There are some exceptions for essential travelers (like spouses of Canadian citizens, essential workers, etc) that are currently permitted to enter Canada. You can see the full list here.
Canadian Citizens = yes. Of course, Canadian citizens are always welcome to return home at any time.
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