You don't seem to feel that you're Native American, so I'd say "no."
Strictly based on the extra-national question, however, I would most definitely say it does NOT matter if one is Canadian or American. It's fairly common for groups to straddle the border anyway, so no big deal. Still, if your only claim is "someone else is Indian, should I say I'm Indian too?" the statement conveys that you don't view yourself as an Indian.