All Moose have dual Citizenship, so they aloud to cross the border without any restriction.Most if wild life from Canada and USA has dual citizenship, and is the same for all of them like with the moose. they all have right to free transit from Canada to U.S.A.There is only one that has a restrictions.Polar Bear, this bears are only allot into Alaska, and Canada, but not into any other U.S.A. state, special cases apply for Polar bears in U.S.A. Zoos, they a especial work VISA and this allow them to come into any Zoo in the U.S.A.Sorry, forgot about the Canadian Lynx, Canadian Lynx also need especial Visa, like they have the Canadian as part of their name, and they did not want to get rid of it (the U.S.A. suggested a change to North American Lynx, but they refuse), the U.S.A. government imposed a sanction on them and they required a VISA to go into U.S.A. territory, even Alaska.