Rubio wants the blessing of the Bush family. If Jeb really is his friend, Rubio will mellow into a moderate Republican and I'm sure he already wants some form of amnesty to garner the votes of Hispanics in Florida and beyond.
I agree with Jim that more infusion of Hispanics will doom conservatives until the country collapses economically (which it probably will do soon).
The post you cited was from the OP, not mine. :)