Not sure if brought up before, but do you need this letter if traveling in either direction with your kids sans spouse over the border, or just going into the states? Also is this just a US/Canada thing or does it relate to other countries.
I am planning a summer off next year and will be taking my kids with me for an extended period of time which may include overseas and traveling around the US, possibly even departing overseas from the US.
Can I just get a blanket letter that covers 2 months or does it need to be specific for each crossing of a border?
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