lots of anecdata there -- the division in the US politically between former slave-owning states and those opposed to slavery, and their vacillating political power, definitely adds to the extreme cases listed here. Plenty of classification and census work counts the majority of people with Indian Sub-continent history as "caucasian" . Those with the reverse axe to grind, spying racists everywhere, will emphasize the unjust and archaic examples. In the demography work I saw with my own eyes, people from the Indian Sub-continent were counted as "caucasian" without question.

not interested in partial arguments that can be misquoted by extremists on either side of this.