If the Clovis people were first, where are the North American cities/structures comparable to Olmec structures in Mexico or many areas in Peru and Colombia? Where did the Maya learn their civil engineering? How did the Moche and other South American cultures become so sophisticated at metallurgy and other difficult skills like stone carving?
Based on the evidence available to my own 'lying eyes,' it's clear that the more advanced civilizations were moving north, not south. Whether these people came from Iberia, Australia, what is presently Japan and China or even Africa, they clearly came by boat. And they came much earlier than the Clovis dogmatists think.