My daughter recently went to mexico for spring break she was 13 with a friend and her family. We were told by a judge friend to make sure we gave them a notorized letter giving them permission to take her out of Canada and into the states then mexico. It had everything on it including flight numbers, departure times and the hotels they were staying at. I would rather have gone through all that crap then have them get to one of the borders and be refused!! They were asked for the letter twice once going into mexico and once going into the states from mexico.