Who were the Clovis people?

Although a highly contentious issue among anthropologists, the reigning opinion is that the "Clovis" people were the first inhabitants of North America, arriving after the Last Glacial Maximum (which was 18,000 years ago).  They are called the Clovis people because the first discovery of the bone and ivory projectile points they are known for was made at an archeological site in Clovis, New Mexico.  These points have subsequently been discovered in many sites in the U.S., and the oldest artifacts have been reliably dated to be 11,500 radiocarbon years old (translating to roughly 13,500-13,000 calendar years ago).  The Clovis were big-game hunters of megafauna who would attach these fluted points to the end of wooden spears to bring down their game.  They appear to have been constantly on the move, as they never built any permanent structures or dwellings, making their way steadily across the continent.  They left little evidence other than a few (known) campfire hearths and butchering sites, scattered across the Americas.