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American unless they raised him in Canada and put it on his birth certificate and moved but we're not sure when wolverine gave his son away. Possible duel citizenship

Different jimmy Hudson but ultimate wolverine is now in the 616 universe

http://www.cbr.com/x-men-blue-clawed-mutant-revealed/

I took it as a lie to cover the clone. Though even the clone seemed to have E-M powers even without wearing the suit in the Wolverine issue where he was killed

1. Seems when he returned from the dead (during Chaos War) he came back 100% human
2. It was his last appearance. No, she actually returned during World War Wendigo and she was back on the...