The coastal route theory that Native Americans occupied North American using

Pacific coastal route

The Pacific coastal migration theory proposes that people first reached the Americas via water travel, following coastlines from northeast Asia into the Americas, originally proposed in 1979 by Knute Fladmark as an alternative to the hypothetical migration through an ice-free inland corridor.

the difference is that white collar worker performs skills like worker as a scientist or well blue collars do physical work and they do services like being a cook.

a big wall across the mexican border so no drugs, terrorist, or illegal immigrants can come through : )