Originally Posted by Matt 26z

Popular theory is that native Americans came here when a land bridge still existed near Alaska (no proof of this land bridge exists). There is however a growing belief that the Chinese sailed the Pacific and native Americans are descendants of the (possibly shipwrecked) Chinese.

It is also becoming more accepted that Vikings sailed the Atlantic and landed in America also. So it could very well be that the native Americans people like to think of as having claim to America are actually a mix of Asians and Europeans.

That makes more sense than a hypothetical land bridge that exists only because we need a way to explain how people got here before Columbus.