What are the theories on how aboriginal people got to the Americas?

Question

I'm looking for theories other then the "Bering Strait Land Bridge Theory".

Also I would prefer answers that cite a source that is not wikipedia.

Answer 1

well they're finding pre clovis sites back east that seem to have the same style of points that are found in France, so i suppose there may have been a land bridge from europe as well, but the archaeologists where I live dont like to talk much about "Pre-Clovis"

Answer 2

The only plausible path is over the Bering land bridge.  Unfortunately, I have no specific references.

Answer 3

I just saw a Discovery channel program on this. They did a genetic trace on Native Americans and found that most were linked to a tribe in Mongolia. Also there wasn't a lot of variation, so now they think that there weren't "waves" of immigrants, but rather a few tribes that expanded, varied, and warred with each other for dominance. (This is a very, very simplified synopsis, I know.)

Answer 4

Early Asian boats may have navigated across the north Pacific and along the American west coast as far down as Mexico or more.