What document do i need to bring if i want to get in to canada with a baby?

Question

something like green card, the baby birth certificated or ss card....

Answer 1

right now a driver's license and and a document that identifies the child as yours. Come the first of Sept. you are going to need a passport for you and either have the baby put on your passport or the baby will have to have it's own.

Note; you mentioned a "Green Card," is the Child American? I assumed so, but after re reading your question I have that as a question. The best id for the child is the birth certificate and if you have the ssn that is also good

Answer 2

proof the baby has permission to travel from its parents