When I had a double college major of Spanish and Archaeology, I was amused that the textbooks of the time stated humans came across the Bering Straight 10,000 years ago. I immediately knew that people had entered North America earlier than that, we just had not found the evidence yet. One of the wondrous and frustrating parts of the archaeology is that we know there is more evidence under our feet.
While I was privileged to actually excavate on the US West Coast, and even in Central America, I soon learned that archaeology cannot pay a mortgage, or any other bill for that matter.
While we no longer travel in Mexico, the Mexico City subway system was fun. When you are walking from train to train, you use these walkway tunnels. Mexico City is the ancient Aztec capital. When they were built the subway and walkways, when they came upon something Aztec, they would clear off the object and label it. Passersby could stop and enjoy it.
The Clovis limit is arbitrary; prior to radiocarbon (about 1950) the floor date for the settlement of the Americas was about 1000 BC. It’s odd that the left doesn’t realize / acknowledge that “colonizing” in the sciences very much includes isolationism / Clovis-first-and-only for Precolumbian America.