Canada used to have its border post at the physical border. But felt that this allowed too much smuggling with the reserve all around it.
My understanding is that moving the border post had more to do with poor community relations. It became too much of a hassle to maintain it on Akwesasne land:
My understanding is that moving the border post had more to do with poor community relations. It became too much of a hassle to maintain it on Akwesasne land:
https://en.m.wikipedia.org/wiki/Akwesasne