There won't be enough Rush babies to outvote the illegals on the dole once amnesty is given. Furthermore, the reproduction rate of Hispanics is one of the highest in the country. Fortunately, most liberals don't have large families--but beneficiaries of socialist programs seem to have unlimited fertility rates.
And more and more of their children are being born out of wedlock. I'd always believed that Hispanics' value for religion made their family structures strong, but I appear to have been mistaken.