What would the average skin tone and facial features look like after 300 years if every partner relationship was interracial until there were no other ethnicities? Just a hodgepodge of DNA. What would the average human look like having a little bit of everything in them?
I just think the idea is neat is all.
You have to ask biology, not politicians. That’s the major change!
Biology’s answer is simple, and it hasn’t changed during the last 50 years or so.