Canadian passport, greed card holder, 再请教, 谢谢啦!

for my trip from US to Canada,

to enter Canada, do I need Canadian passport or Canadian citizen card?

to come back to US, do I need Canadian passport or just green card?

your guidance would be much appreciated. 

所有跟帖： 

• in another word, do I need Canadian citizenship card? -五分店- ♀ (75 bytes) () 07/03/2011 postreply 11:35:08

• 回复：in another word, do I need Canadian citizenship card? -dfwdfwdfw- ♂ (177 bytes) () 07/03/2011 postreply 12:56:31

• many thanks! -五分店- ♀ (0 bytes) () 07/03/2011 postreply 14:02:14

• 我进Canada时候 -garry2- ♂ (76 bytes) () 07/03/2011 postreply 18:57:42