Yes, they Nobel winners were immigrants. But nobody is against all immigration, not even Trump, and if you look at who they were you'd see that they definitely tended to be more like what we'd get from a nation "like Norway" than from Latin America or Africa.

The point being that it is a fatuous and misleading statement. Since the frame from which immigration is argued for is commonly seen as being from poor less developed nations seeking a better life while these high achievers were not, while Trump and his supporters are decried as racist. So the nobel winners being of the same race as them deflates that