Legend of starcrash

Through regressive hypnosis a lost legend of the history of mankind has been retrieved from the recesses of time. Did the American Indians descend from the inhabitants of an alien spacecraft that crashed in the Alaska-Canada region thousands of years ago? Starcrash indicates that aliens continued to come to Earth, some intentionally and by accident, throughout our history. In order to adjust to harsh conditions they were forced to interbreed with the local aborigines. This was the only way to insure the survival of their race. Does their blood still flow in the veins of certain American Indian tribes?