“constitutional rules forbidding sexual discrimination”
Is that in the Constitution?
There’s women’s suffrage in there but that’s about it.
Am I missing something?
It is in, if the people who determine what is in or out say it is in.
We can argue whether it was “wrongly decided” but we have to live under the result.
https://en.wikipedia.org/wiki/Obergefell_v._Hodges