My thought was that they were going to refute the idea that people came to North America through the land bridge. If native rights fanatics can say they were “always here” it makes their claim as victims even stronger.
I understand... but 30,000 years is a long time, much longer than the time frame in which the ancestors of the current Indian populations were thought to have arrived. There was actually an interesting site found a few years ago in the Pacific Northwest, possibly Washington State, that got a lot of attention until it was determined that the remains and artifacts found there were possibly Caucasian rather than Mongoloid (Asian). In other words, Prehistoric Slavs rather than prehistoric Asian populations. I think the material is in the archaeology lab of a university there and has disappeared from view.
So I agree, people do use these things for political purposes - but therefore, what we need is more information and more objectivity, not less.