你可以到这个页面看一下:http://www.cic.gc.ca/english/visit/visas.aspUnited States citizens and permanent residents: You do not need a visa to visit or transit in Canada if you are a United States citizen or a person lawfully admitted to the United States for permanent residence who is in possession of their alien registration card (Green card) or can provide other evidence of permanent residence. 大意是如果持有绿卡(为合法的美国永久居民)则不需要签证
你可以到这个页面看一下:http://www.cic.gc.ca/english/visit/visas.aspUnited States citizens and permanent residents: You do not need a visa to visit or transit in Canada if you are a United States citizen or a person lawfully admitted to the United States for permanent residence who is in possession of their alien registration card (Green card) or can provide other evidence of permanent residence. 大意是如果持有绿卡(为合法的美国永久居民)则不需要签证