A quick question about documents needed for the kids in regards to permission from the other parent to bring the children across the border. Is it something similar to a Letter of Consent to Travel or is it more extensive than that? My fiance understandably wants something in writing in regards to my ex' consent to move the girls with me, and my ex is willing, just need to know what specific type of document we need, and what needs to be on it. If anyone has any info, thank you!

I have sole custody so there is nothing my ex couldn have done about it, thats all they needed for his visa....just our seperation agreement that preceeded our divorce which outlined the custody agreement. 'mother has sole custody with father having reasonable access with reasonable notice'

I got a court document saying that I could leave the country with the child and move to ............. It then states I need to give him 1 month notice if I was moving any farther than 100 miles from that location.

I had had the court documents from years ago stating that I had sole custody.
It was suggested to me by another immigration forum that I should have something more recent, so I had my ex go to a notary and have a "letter of permission" drawn up and notarized. It was a brief letter that basically supplied his name, my name and my future husband's name and my daughter's of course. In it he stated that he was fully aware and amenable to the fact that Alli would be living in the USA with me and her new step-father, had his permission to travel freely but that my ex would retain vistation right as agreed "by mutual consent". Gave his address and phone number as well as ours, signed it and had the notary sign, date and put a red seal on it.
I have used this letter for crossing the border (back and forth for 3 years now), added a copy of it with my adjustment of status application when I applied and never had a single problem with it.
I say get a letter notarized if you can.

I believe passport Canada has a example letter they use for parental permission.

thanks for the help! Now just to find a notary who doesnt want to remove vital organs through my pocketbook

I had my lawyer write up a letter stating that I had my ex's permission to move our son to the US.

Then my ex had to go in and sign it. That was good enough for my interview in Montreal.

Many lawyers offices will notarize a letter for around $10. Just call around and ask. Good luck