Your kids are Cdn, yes? If so, they need no stamp, just like you.
Thanks nelson for the reply. I have one Canadian and one American Kid, so, for my Canadian kid, same like me, she don't need the visa stamp, my other kid has American passport, so, he is fine too!
All our current I94s are valid until January 30, 2018. We are driving and crossing into Canada on Jan 30th.
Our visa appointment @ Ottawa is on January 31, 2018, as suggested I will carry the I129 and approval notices of all of us and all the documentation submitted with it, in case, the officer at consulate want to have a look at it.
Hopefully, we will have our wife's TD visa stamped by Feb 2, 2018.
We will drive back to US on Feb 2nd and enter US using the new I94s that are attached with I-797A approval notices. I am just thinking, to tear off the I-94 portion of it and attach it to the current expired I94 cards, so that they can have a look at the old I94 and take it back, keep the new I94 intact in the passport, or, they may reissue a new I-94 matching the date that is on approval notice which is Jan 29th 2021. Because, the approval notice I received has two bottom portions; one is I94 card with no expiration date on it and on the other side, has the same information with an expiry date indicated (Feb 8, 2021). I am not sure, whether I should detach the I94 portion and staple it to current I-94 or just leave it like that and give the entire I-797A forms to the border officer, he will detach and place it in the passport. If you have some idea, please share.