You can get a permit to transit the US or to possess in the US with a valid State Hunting Licence. I don't know the details but North Dakota seems to be the State of choice of my Canadian friends. Cost most likely.
If you need more info pm me.
-------------------- Lovu Zdar
Mick
A Man of Pleasure, Enterprise, Wit and Spirit Rare Books, Big Game Hunting, English Rifles, Fishing, Explosives, Chauvinism, Insensitivity, Public Drunkenness and Sloth, Champion of Lost and Unpopular Causes.