The question actually resolves to whether the latest wave of immigrants plans on becoming integrated into the existing population and generating the same or similar levels of productivity or if they plan on being perpetual free riders.
If the former, then I would agree that Marco Rubio is emblematic of exactly the kind of ethnic person we should support (I would no matter his ethnicity, he seems to be an upright man independent of the local source of his bloodline). If the latter, then we may as well fragment now and minimize the pain.
They don't assimilate, they Balkanize.
Gay Adoption, Romney Care and now Open Borders, that makes the ticket broad based for sure. </sarcasm>