父母持一年有效多次往返B2来美。欲为他们办加拿大旅游签证。
按使馆网页上的解释(原文附上)，如果我父母只申请single entry visa,
假设入加国境时给6个月签证，这期间来回往返美加两地应该都无问题？
我的理解正确吗？多谢回复。
A single entry visa allows you to enter Canada only once. This visa may also be used for repeated entries
into Canada from the USA or St. Pierre and Miquelon provided you do not enter another country. Such
entries must occur within the time validated for your stay in Canada. For example, you may be given six
months from the date you enter Canada at the port of entry.