有这回事吗？我们绿卡去加拿大（2015年初），海关扫了绿卡，连护照都不看直接还回来。

这是加拿大官网：[url=http://www.cic.gc.ca/english/helpcentre/answer.asp?qnum=593&top=16]http://www.cic.gc.ca/english/helpcentre/answer.asp?qnum=593&top=16[/url] 如果是你是坐飞机入境，上面说要eTA

9月20号之前开车啥的去不需要；之后如果飞去啥的需要。海关的人说了这是个" China thing" 他们自己好多工作人员目前也还不知道是啥东西。

要到下半年才正式实施，现在没有申请也是可以过海关的。

有同样的疑问。刚看了下楼上提供的链接， 看到下面这段话。那就是如果我七月去就不需要申请是吗？

New entry requirement now in effect: visa-exempt foreign nationals are expected to have an Electronic Travel Authorization (eTA) to fly to or transit through Canada. Exceptions include U.S. citizens, and travellers with a valid Canadian visa. Canadian citizens, including dual citizens, and Canadian permanent residents cannot apply for an eTA.

Note: Until September 29, 2016, travellers who do not have an eTA can board their flight, as long as they have appropriate travel documents, such as a valid passport. During this leniency period, border services officers can let travellers arriving without an eTA into the country, as long as they meet the other requirements to enter Canada. Find answers to your questions about the leniency period.