No. You need to check with the Canadian Consulate or Canadian High Commission (Haut Commissariat du Canada) in your country of citizenship for the specific visa requirements.
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Dean P. Murray
The Murray Law Firm
560 Sylvan Avenue
Englewood Cliffs, NJ 07632
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If you have a valid visa a valid passport you may return to the US. Generally the Canadiens treat United States citizens as we treat Canadians. You need to contact the Canadian consulate for visa issuance
US L-1 and L-2 visas are not valid entry documents for Canadian immigration purposes. It also depends upon your nationality - certain nationals such as Britishers don't need a visa to enter Canada. Please check Canadian visa requirements.