是不是有绿卡的就不用申请visa了？另外回来的时候要在加拿大停一下，也不用签证了
吧？
看到网上说
Visitor Visa Exemptions
Many people do not require a visa to visit Canada. These include:
•persons lawfully admitted to the United States for permanent
residence who are in possession of their alien registration card (Green card
) or can provide other evidence of permanent residence;
