They were bones from earlier peoples overrun by later tribes who were overrun by the later tribes as has happened throughout history. Now a small handful of the latest tribe survivors thinks the USA owes them a tax free living.
Or conversely you could have quickly browsed one of thousands of laymen's science resources (public news outlets for example) and you would have obtained the same knowledge and more, several years ago.
In what possible way does any of that have any relevance to current events?
Everyone's entitled to their own opinions, but not their own facts.