Leakey is considered wrong about the tools, and was disputed immediately, but he was on the right ground — he looked at what was known even at that time about the PreColumubian civilizations, which are all different, along with the many different languages and language families. It’s clear and obvious that the Americas have been colonized multiple times, and the population shifts due to climate and population booms have been numerous and of great antiquity.
The film I saw showed no one disputing, but maybe someone did. This was the time Leakey fell off the stage. The film was(I believe) a NAT GEO film from the early 1970s.
I found a stone tool on my place not long ago. it looks just like a small hand axe from Africa. I’ve often wondered if ancient Indians used something like this as it was tear dropped shaped with cutting edges on both sides, and thick at the non pointed end where someone would grasp it.