Wondering if anyone knows whether permission is needed to leave AR to go to Uruguay with my son who is under 18. We are both US citizens here for the holidays and did not leave the US with a notarized letter from my son´s father stating that it was ok to travel to Argentina (although he is fully aware and ok with it, just didn´t know that this could be an issue)... The US does not require it to exit the country and I was not asked upon entering Argentina. However, a friend of mine here believes I will not be able to travel for the weekend to Uruguay and back to Argentina without one...is this true? Will I also need one to leave Argentina and return to the US after the holidays? Isn´t this just a requirement for Argentine Citizens? Thanks in advance for your help!