Ignoring you continued reliance on the liberal definition of the liberal definition of Catholicism to make your points, I will remind you that white Catholics voted overwhelmingly for Mitt Romney in the last presidential election, more so than non-evangelical protestants.
Seems to me that if its a political point that you're trying to make on this political website your disagreement here is with immigration in general, not Catholicism. And even that conclusion is misleading. Both the percentage of US immigrants who identify as "Christian" and the percentage of those who further identity as "Catholic" has been falling significantly in recent years.
Most surprisingly, the percentage of American Hispanics who identified as Catholic has fallen from historically 75-80% to only 55% in the most recent Pew poll (2012).
I count Catholics who are members of the Catholic church, and the Catholic vote hasn’t changed, it is still democrat, and it is a religious denomination, not a race, Catholics were voting democrat long before Hispanics showed up in large numbers.
The fact that there has been movement right by the shrinking number of white Catholics in recent years in America, has no meaning about the Catholic vote and it’s continued loyalty to the democrat party.