Here is an answer to a very similar question that I prepared a couple of years ago. In short, the answer is no, the route into North America from Asia was via Beringia. There has been debate on where the route went once it got to North America, whether it followed the coast or an "Ice Free Corridor" east of the Rockies. The thinking now is that it likely followed the coast but there are still adherents to the Ice Free Corridor theory.

There is a very small minority that argue for multi-regionalism - that the human ancestors of Native Americans evolved in the New World. There is no science supporting that position, however.

If you have further questions, I will try to answer them.