Bible_Belt
Master Don Juan
The only thing "clear" to me is that you read that on one of your white supremacy web sites. Those inbred, slack-jawed, cousin-fvckers will believe anything, as long as the moral of the story is white=better.The DNA clearly shows the Clovis people were of germanic origin and are different than the native americans.
For the rest of the world, it's just one of many hypotheses about ancient history, which we know very little about. https://en.wikipedia.org/wiki/Solutrean_hypothesis
If that link makes you uncomfortable, you'll like this one better: https://en.wikipedia.org/wiki/White_gods