Except that neither opinion in these cases conflates Indians with immigrants in the way you're trying.
The Elk opinion and the WKA opinion were authored by the same Justice -- Horace Gray. I think that Justice Gray understood better than you why these opinions aren't conflicting.
The whole subject is academic because as we know the Justices will rule as they please unrestrained by the wording in the Constitution, ethics, or anything else. But thanks for a polite conversation.