All of this is NONSENSE. The first people to discover America were the ancestors of the Native Americans, at least 12,000 years ago, and according to some experts, as early as 30,000 years ago. There is no doubt they were the first.
It is racist to suggest that Chinese, or Vikings, or Egyptians were the first "people" or to come to America. Some Native cultures, such as the Maya, were quite advanced 2000 years ago.
Maybe the Maya or some other Native civilization discovered Europe or China.
The oldest Mongoloid skeleton ever found anywhere is only 10,000 years old, RE: Professor Stephen Oppenheimer. Also, the oldest skeletons found in the Americas are like those of the Ainu (Caucasian like, not Caucasian). There is one, Luzia, 10,500 years old that is (looks like) African.
"rasicm"? Huh. Really kinda pro-aboriginal-amerind there, ya'?