Obviously there were people that walked across the Baring Strait during the ice age, thus the Native Americas and all the indigenous peoples of North and South America, but I haven't heard of anyone sailing across. Who and when?
the oldest known evidence of humans in the New World is in South America at Monte Verde c. 20, 000 years old. Oldest evidence in N america is c. 12,000 yrs old - conclusion - North America was first colonized from South America.
Potato is native to South america but is found throughout Polynesia - conclusion - there was trafdfic back and forth fromPolynesia to South America.
The "walking south from the Bering" argument has been supplanted by evidence that there was never a contiguous ice free corridor south from alaska/yukon area.
If anyone did come south from the Bering - they came by boat along the Coast. the oldest archeological evidence in BC is all in sea level and now undersea caves (sea level was 100m lower in ice age). coastal refugia were only ice free zone.
which may explain why Kennewick Man looks Polynesian