If you read Paul Johnson’s book “Modern Times”, you’ll come across a section on Republican president Warren G Harding.
Johnson’s main thesis is that history has gotten Harding wrong. Liberals hoisted a “fail” on his short tenure in office but Harding was actually a pretty good chief executive.
One of the most interesting points made was that during the 1920 campaign, the Democrats were FIERCE about attacking Warren Harding for having black ancestry. Democrats were and are bigots.
Now supposedly in the age of DNA testing, it has been shown that WGH did not have African blood. I am not sure. But it could very well be that other Presidents have mixed origins. I would say after thousands of years of civilization MOST of us in the past 500 years (1000? 2000?) are not “racially pure” as the extremists of all colors are wont to say.
It’s an accepted truism in the south that all old families have “a touch of the tar” in them. “Cherokee” covers a lot of ground.