In a previous post I argued that the answer is no: I don't believe that immigration will make America more diverse, nor do I think it will make the electorate vote more Democratic.  That's because immigration from Asia and Latin America has made earlier immigrants from southern and eastern Europe seem less different, more "white" than they seemed in 1924, when immigration was restricted because America seemed to be becoming extremely diverse. By the 1950s, that same ethnic mix was...