Chris Johnson - I was mostly referring to how America would have developed had the tribes been left in peace
Dracho - Interesting, I thought that the claims of kennewick being Europid were said to be... "hateful". I remember several "civil rights" groups being very up in arms about that.
Obi-Juan Barabbas & Jack - Theyre already at it, I just dont have any links in english about it...
Kennewick being caucasoid isn't hateful, it's political. Other skeletons have been found to support the supposition, including a female in New Mexico.
It make sense that wandering tribes of people from northen eurasia would have crossed the bridge too.
Most likely, that's what it indicates. That multiple ethnic groups were crossing the land bridge in various migrations.