A Crucial Piece Missing in the Democratic Presidential Debates

I watched both of the Democratic presidential debates over the last two nights, waiting to see if anything related to the invisibility of Indigenous peoples would somehow make its way into the conversation. I didn’t expect it to, of course; in a nation that does not even begin its events with a land acknowledgement (like Canada, Australia, and other nations do), why would we expect that the experiences of the original peoples of this land would come into a debate when each candidate only has a limited time to respond?