I'm not sure where you get "progressive racists of eugenics" from.
However, even during the great immigration of the 19th and 20th centuries, those migrations were controlled and "undesirables" were denied admission. Granted, it was not as straightforward as today - there was much less of a border control force for example. It was also a time when there was so much growth that immigration was a necessary policy. That is not true today. Times change, and policies need to change in accord with them.

There are many issues that can be divisors - what does that have to do with posting a topic. I for one relish the debate. It makes me clarify and refine my own perspective.

As for my posting, what is it to you? Seems that is an issue between the owner of the site and me. Are you claiming some ownership? What value have I received from you that I need to provide value in return?