If your question is a general question about the legality of interracial sex vs. the content of treaties, they have no relation as far as I can tell.
um, no, why would that be my question.
If your question is how the comment is relevant in the context of this particular discussion about several things including some treaties, the answer is that it shows that Politesse's constitutional interpretation is incorrect - an interpretation that he used in the context of the thread, before I posted my comment. This is not a particular interpretation about a particular treaty, but the general idea regarding the relation between SCOTUS rulings and constitutionality - and broadly legality. But you do not need to believe me: If you take a look at the exchange and you read what was said by either of us, you should have no trouble realizing why the comment was relevant to the ongoing conversation.
None of which makes this weird tangent relevant, but since you keep on insisting in bringing in interracial sex, let's talk about it. Since the treaties were about retention of long-standing rights and sometimes putting boundaries or borders around things, but also sometimes about putting at least some of the long-standing rights those tribes had on paper, you have to really introduce this idea of jurisdiction by multiple legal entities as well as long-standing recognized rights into your interracial sex analogy. To be clear, treaties do not merely cover geography on-reservation since many of the treaties also perpetuate long-standing land, water, etc rights
off-reservation while typically tribal courts probably only have jurisdiction
on-reservation.
So, let's introduce the federal government, a hypothetically federally recognized tribe, a treaty, and a reservation into your interracial sex analogy in Alabama. The old Alabama law was actually about sex between a White person and any other person who may have recent Black ancestry (within 3 generations). So, let's say there's a White lady and a man who had a grandfather who was an African slave at the far back time of this old law. Suffice to say, he meets the criteria for the old interracial sex law. But let's also say that two of his other grandparents were White and further that one was Native American. Let's say he uses some kind of system of paper trails recognized by the hypothetical Native American tribe in Alabama and so they recognize him as a tribal member, even though he has multi-racial ancestry. Let's further suppose the tribe had a treaty with the US government where the tribe conceded to a boundary of a reservation for their land ownership but they retained their rights to accustomed ceremonies and traditions that included marriage, sex, divorce, adoption, and an annual raindance in some specified town.
Now, suppose the White lady and the federally recognized tribal member reside off-reservation in the state of Alabama where this law is codified. They get married and are having interracial sex in their house. Twice on Tuesdays.
Would the state law supersede the treaty in place? Suppose both the interracial-sex having couple and the federal government sue the state in court for the law, do you think the state would win? (Yes or No).
Now, let's add a nuance. Suppose the treaty also covered water rights to waterways in Alabama and in a sense and looking at history, this meant that the tribe retained at least half-ownership of waterways because at the time historically they were also sharing those rights with the settlers. Now, let's suppose that the interracial couple while married in the state of Alabama, only has interracial sex in a canoe on a waterway in said domain where the ownership is shared between the public in a very broad sense so as to include both the original tribal ownership and the extension to the federal government having settled there. So, in this nuanced hypothetical, the couple does not have interracial sex in their home, just in a canoe, properly covered up and hidden behind some blankets or whatever.
Would the state law supersede the treaty within this location of the waterways where the interracial sex is taking place? Again, suppose both the interracial-sex having couple and the federal government sue the state in court for the law [after an arrest or whatever occurred], do you think the state would win in this waterway situation? (Yes or No).