Actually i find it so funny when some ancient aztec temple is found and someone says 'I am the first to see it' (when obviously someone had to build the darn thing); or when an explorer sees the Nile for the first time and says 'I discovered the Nile' (when just a few meters to his left are villagers fishing from the darned river), etc etc etc.
Whether the Chinese came here before the Vikings, or whether the Raelians were engaging in clone wars 500 years ago and flying to the moon using Alien tech, the fact still remains that Native Americans had arrived thousands of years ago! Hence i this is a competition of who got here first then i guess the winner is a native american.